MOURC Proceedings Archive for The Loon

	MOURC Proceedings Archive - Screech-Owls, Owls	Accepted Duplicates
	This is the 1981 to present Records Committee Proceedings archive for The Loon, journal of the Minnesota Ornithologists' Union. The last 2 years are available to MOU members.

Families

Whistling-Ducks, Geese, Swans, Ducks
New World Quail
Partridge, Pheasants, Grouse, Turkeys
Grebes
Pigeons, Doves
Cuckoos
Nightjars
Swifts
Hummingbirds
Rails, Gallinules, Coots
Limpkin
Cranes
Stilts, Avocets
Plovers
Sandpipers

Jaegers
Alcids
Gulls, Terns
Loons
Shearwaters and Petrels
Storks
Frigatebirds
Boobies and Gannets
Anhingas
Cormorants
Pelicans
Bitterns, Herons, Egrets, Night-Herons
Ibises
New World Vultures
Osprey

Kites, Accipiters, Hawks, Eagles
Barn Owls
Screech-Owls, Owls
Woodpeckers
Caracaras, Falcons
Flycatchers
Vireos
Shrikes
Jays, Nutcrackers, Magpies, Crows
Martins, Swallows
Kinglets
Silky-flycatchers
Nuthatches
Wrens
Thrashers, Mockingbirds

Dippers
Thrushes
Old World Flycatchers
Old World Sparrows
Pipits
Finches
Longspurs and Snow Buntings
Towhees, Sparrows
Yellow-breasted Chat
Blackbirds, Orioles
Warblers
Tanagers, Cardinals, Grosbeaks

Proceedings

Species: Screech-Owls, Owls

Northern Hawk Owl
Burrowing Owl

Great Gray Owl
Boreal Owl

Northern Saw-whet Owl

	Ref	First	Last	Location	County	3	Comment	Status
Boreal Owl (R) (Aegolius funereus)							Start Date 1936-01-01
	avian information	1947-04-10			Carlton		4/10 Carlton (first county record)
	avian information	1949-02-06			Wadena		2/6 Wadena (first county record)
	avian information	1955-02-01	1955-02-31		Wadena		2/1-31 Wadena (second county record)
	avian information	1957-03-01	1957-03-31		Wadena		3/1-31 Wadena (third county record)
	avian information	1967-03-01	1967-03-31		Carlton		3/1-31 Carlton (second county record)
	avian information	1969-01-01	1969-02-31		Freeborn		1/1-2/31 Freeborn (first county record) First significant invasion since winter of 1965-66; note coincidence with Great Gray Owl invasion both years; see Jan Green's write-up this issue.
	avian information	1969-02-03			Morrison		2/3 Morrison (first county record) First significant invasion since winter of 1965-66; note coincidence with Great Gray Owl invasion both years; see Jan Green's write-up this issue.
	avian information	1969-02-15			Anoka		2/15 Anoka (first county record) First significant invasion since winter of 1965-66; note coincidence with Great Gray Owl invasion both years; see Jan Green's write-up this issue.
	avian information	1969-02-15			Le Sueur		2/15 Le Sueur (first county record) First significant invasion since winter of 1965-66; note coincidence with Great Gray Owl invasion both years; see Jan Green's write-up this issue.
	avian information	1969-03-03			Carver		3/3 Carver (first county record) See June issue
	avian information	1969-04-21			Sherburne		4/21 Sherburne (first county record) See June issue
	avian information	1972-01-16			Sherburne		1/16 Sherburne (second county record) 1-16 nhotographed SHERBURNE NWR, R. Watlov; 2-28 found dead, Duluth MMC..
	avian information	1972-11-09			Pine		11/9 Pine (first county record)
	avian information	1977-03-10			Marshall		3/10 Marshall (first county record) 1 report: 3-10 Marshall (1 dead) SVA.
	avian information	1977-12-11			Becker		12/11 Becker (first county record) By far the largest invasion ever in Minnesota (and perhaps anywhere) with sightings of 66 individuals (see The Loon 50:63-68).
	avian information	1982-07-01			Itasca		7/1 Itasca (first summer record) Nested in Cook (*The Loon* 54:212-214). One heard 711 Hwy 169 (mile post 292) Itasca (RBJ).
	avian information	1985-02-14			Mahnomen		2/14 Mahnomen (first county record) Reported calling on the Gunflint Trail, Cook Co. on 12-5, 12-13, 12-23, 1-28, 129 and 2-25 (KMH). Also reported in Mahnomen 2-14 (MH), (*The Loon* 57:110).
	avian information	1987-02-18			Hennepin		2/18 Hennepin (first county record) St. Louis Co. near Cook on 12/23 (KB), Saginaw 2/1-2 (V. Rudolph) and Duluth 2/18 (J. Newman). Calling 9 miles north of Isabella on 2/25 (SWIMS). Also reported in Cook near Bearskin Lake on 2/21 (M. Nevens and J. Tofte).
	avian information	1987-12-01	1988-02-28		Cass		winter Cass (first county record) Reported only at the (KMH) feeder in late January and early February and calling on 2/13.
	6:22	1934	index				Richardson's Owl at St. Peter
	19:76	1947	index				Richardson's Owl Near Cloquet
	21:18-19	1949	index				Richardson's Owl at Sebeka
	24:91-92	1952	index				Food of Owls
	32:65	1960	index				An Owl Trap
	32:66	1960	index				Boreal Owl Banded at Duluth
	35:28	1963	index				Boreal Owl Captures Northern Flying Squirrel
	35:70-71	1963	index				Boreal Owl Flight Along the North Shore
	38:44-45	1966	index				Influx of Northern Owls, Winter 1965-66
	38:46-47	1966	index				Observations of a Boreal Owl at Two Harbors
	38:47-48	1966	index				Observations of a Boreal Owl at Duluth
	39:65	1967	index				Boreal Owl Observation from Hubbard County
	41:36-39	1969	index				Northern Owl Invasion, Winter, 1968-1969
	47:98	1975	index				A Boreal Owl Along the Gunflint
	49:165-167	1977	index				Fall Migration of Boreal Owls
	50:63-68	1978	index				Invasion of Great Gray and Boreal Owls, Winter, 1977-78
	51:20-27	1979	index				First Boreal Owl Nesting Record South of Canada: A Diary
	51:198-199	1979	index				Another Boreal Owl Nest Found in Cook County
	54:73-104	1982	index				Raptors of Minnesota -- Nesting Distribution and Population Status
	54:176-177	1982	index				An Invasion of Boreal Owls
	54:212-214	1982	index				A Nesting Boreal Owl in Minnesota
	54:246	1982	index				Possible Cannibalism in Boreal Owls
	55:38-39	1983	index				Boreal Owl in Itasca County
	57:110	1985	index				Boreal Owl in Mahnomen County
	59:52	1987	index				Boreal Owl at Duluth
	59:151-153	1987	index				Some Boreal and Northern Saw-whet Owl Comparisons
	59:163-165	1987	index				Breeding Boreal Owls in Roseau County
	60:13	1987-12-12		near Appleton	Swift		(vote 0-7). As the observer himself admitted in the documentation , he did not observe any diagnostic features to eliminate the more likely Northern Saw-whet Owl (e.g., black facial frames, paler bill or spotted forehead).	Not Accepted
	avian information	1988-04-10			Stearns		4/10 Stearns (first county record) All reports: 3/20 Duluth JN, 5/27 Roseau (I) KE; also over 50 calling males heard in St. Louis and Lake Co's. owl survey (fide SWi); also see The Loon 60:99-104.
	avian information	1988-12-01	1989-02-28		Hennepin		winter Hennepin (second county record) Also an invasion year with 100 + individuals recorded, almost all were found dead from road kills or starvation, primarily in the northeast region. Also reported in Clay 12/5 LCT, Kanabec 12/31 JG and in Minneapolis 2/18 SC (*The Loon* 61 :85-87). \ ><'¥Northern Saw-whet Owl
	avian information	1988-12-01	1989-02-28		Norman		winter Norman (first county record) Also an invasion year with 100 + individuals recorded, almost all were found dead from road kills or starvation, primarily in the northeast region. Also reported in Clay 12/5 LCT, Kanabec 12/31 JG and in Minneapolis 2/18 SC (*The Loon* 61 :85-87). \ ><'¥Northern Saw-whet Owl
	avian information	1988-12-01	1989-02-28		Stearns		winter Stearns (second county record) Also an invasion year with 100 + individuals recorded, almost all were found dead from road kills or starvation, primarily in the northeast region. Also reported in Clay 12/5 LCT, Kanabec 12/31 JG and in Minneapolis 2/18 SC (*The Loon* 61 :85-87). \ ><'¥Northern Saw-whet Owl
	avian information	1988-12-05			Clay		12/5 Clay (first county record) Also an invasion year with 100 + individuals recorded, almost all were found dead from road kills or starvation, primarily in the northeast region. Also reported in Clay 12/5 LCT, Kanabec 12/31 JG and in Minneapolis 2/18 SC (*The Loon* 61 :85-87). \ ><'¥Northern Saw-whet Owl
	avian information	1988-12-31			Kanabec		12/31 Kanabec (first county record) Also an invasion year with 100 + individuals recorded, almost all were found dead from road kills or starvation, primarily in the northeast region. Also reported in Clay 12/5 LCT, Kanabec 12/31 JG and in Minneapolis 2/18 SC (*The Loon* 61 :85-87). \ ><'¥Northern Saw-whet Owl
	60:99-104	1988	index				1988 Boreal Owl Survey in Cook County
	61:85-87	1989	index				Boreal Owl in Minneapolis
	61:189-191	1989	index				Nine Owls
1	61:121	1989-02-18		Minneapolis	Hennepin		(vote 7-0; The Loon 61:85-87).	Accepted
	avian information	1991-11-16			Becker		11/16 Becker (second fall record) All reports: 10/10 Hawk Ridge, Duluth TW, 11/16 Becker (found dead) BB, 11/26 Beltrami (found dead) DJ.
	avian information	1991-11-26			Beltrami		11/26 Beltrami (first fall record) All reports: 10/10 Hawk Ridge, Duluth TW, 11/16 Becker (found dead) BB, 11/26 Beltrami (found dead) DJ.
	avian information	1994-12-01	1995-02-28		Cass		winter Cass (second county record) Only report 2/28 Cook SOL.
	avian information	1995-06-11			Koochiching		6/11 Koochiching (first summer record) First summer report in four years. Bird heard calling on 6/11 two miles east of Ray in Koochiching Co. PS.
	avian information	1995-12-01	1996-02-28		Becker		winter Becker (third county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1995-12-01	1996-02-28		Chisago		winter Chisago (first county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1995-12-01	1996-02-28		Hennepin		winter Hennepin (third county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1996-01-01	1996-01-31		Pine		1/1-31 Pine (second county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1996-01-08			Sherburne		1/8 Sherburne (third county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1996-01-27			Kandiyohi		1/27 Kandiyohi (first county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1996-02-03			Washington		2/3 Washington (first county record) Record Invasion. Steve Wilson reports that 171 were found dead through spring 1996, mostly in the northeastern part of the state; this total does not include some individuals reported by other observers. Reported from 21 counties as far west as Roseau and Becker counties, and as far south as Kandiyohi, Sherburne, Hennepin, Anoka, Isanti, Chisago and Washington.
	avian information	1997-01-01	1997-02-31		Ramsey		1/1-2/31 Ramsey (first county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	avian information	1997-01-01	1997-01-31		Washington		1/1-31 Washington (second county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	avian information	1997-01-13	1997-01-31		Cass		1/13-31 Cass (third county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	63:74-75	1991	index				Physical Interaction Between a Male Boreal Owl and Male Northern Saw-Whet Owl
	64:189-195	1992	index				A Record Invasion of Northern Owls, Fall-Winter 1991-1992
	68:128-129	1996	index				A Boreal Owl in Kandiyohi County
2	MOU	1997-01-14			Kanabec			Accepted
	avian information	1997-01-14			Kanabec		1/14 Kanabec (second county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	avian information	1997-01-18	1997-03-08		Anoka		1/18-3/8 Anoka (second county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	avian information	1997-01-27			Mille Lacs		1/27 Mille Lacs (first county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	avian information	1997-02-01	1997-02-31		Kandiyohi		2/1-31 Kandiyohi (second county record) For the second consecutive winter, more than 100 Boreal Owls have been picked up starving or dead fide SW. Additionally, a number of individuals ventured south where reported from Kandiyohi, plus Anoka, Hennepin, Ramsey and Washington in the Twin Cities area. A first county record established 1/27 Mille Lacs fide PP.
	avian information	1997-03-01	1997-03-31		Todd		3/1-31 Todd (first county record) Largest irruption on record with many south reports (The Loon 69:125–29). Reported through 3/22 at Springbrook Nature Center, Anoka Co. (The Loon 69:111–113). First county record Todd (March) ph. JSK. Despite high mortality during the 1996–97 irruption, 44 Boreal Owls were detected by Bill Lane during standardized surveys this spring in northeast Minnesota (The Loon 69:145–150). 3/1–31 Todd ph. JSK (*The Loon* 69:198). Record high total of 264 Boreal Owls during their 1996-1997 irruption (*The Loon* 69:125–129). [Corrected]
	avian information	1997-03-02	1997-03-17		Ramsey		3/2, 4, 17 Ramsey (second county record) Largest irruption on record with many south reports (The Loon 69:125–29). Reported through 3/22 at Springbrook Nature Center, Anoka Co. (The Loon 69:111–113). First county record Todd (March) ph. JSK. Despite high mortality during the 1996–97 irruption, 44 Boreal Owls were detected by Bill Lane during standardized surveys this spring in northeast Minnesota (The Loon 69:145–150). 3/1–31 Todd ph. JSK (*The Loon* 69:198). Record high total of 264 Boreal Owls during their 1996-1997 irruption (*The Loon* 69:125–129). [Corrected]
	avian information	1997-03-20			Hennepin		3/20 Hennepin (fourth county record) Largest irruption on record with many south reports (The Loon 69:125–29). Reported through 3/22 at Springbrook Nature Center, Anoka Co. (The Loon 69:111–113). First county record Todd (March) ph. JSK. Despite high mortality during the 1996–97 irruption, 44 Boreal Owls were detected by Bill Lane during standardized surveys this spring in northeast Minnesota (The Loon 69:145–150). 3/1–31 Todd ph. JSK (*The Loon* 69:198). Record high total of 264 Boreal Owls during their 1996-1997 irruption (*The Loon* 69:125–129). [Corrected]
	avian information	2001-03-01	2001-03-31		Carlton		3/1-31 Carlton (third county record) Second largest irruption in state history (The Loon 73:143–151). Discovered as far south as 3/18 Carver (Victoria) JBr et al. First county record mid-March Clearwater fide BAB.
	avian information	2001-03-01	2001-03-31		Clearwater		3/1-31 Clearwater (first county record) Second largest irruption in state history (The Loon 73:143–151). Discovered as far south as 3/18 Carver (Victoria) JBr et al. First county record mid-March Clearwater fide BAB.
	avian information	2004-02-07			Polk		2/7 Polk (first county record) Found dead 2/7 Polk (Wetlands, Pines and Prairie Audubon Sanctuary) LBe fide †PHS.
	avian information	2004-12-01			Kanabec		12/1 Kanabec (third county record) Record-high irruption with lower mortality rate compared to recent such events; complete details will be published in a future issue of *The Loon. Unusual locations 1/15–16 Pennington (near Thief River Falls) SBr, ph. JMJ, 1/23 Stearns (St. John's Abbey) BLW fide* PCC.
	avian information	2005-01-15	2005-01-16		Pennington		1/15-16 Pennington (first county record) Record-high irruption with lower mortality rate compared to recent such events; complete details will be published in a future issue of *The Loon. Unusual locations 1/15–16 Pennington (near Thief River Falls) SBr, ph. JMJ, 1/23 Stearns (St. John's Abbey) BLW fide* PCC.
	avian information	2005-01-23			Stearns		1/23 Stearns (third county record) Record-high irruption with lower mortality rate compared to recent such events; complete details will be published in a future issue of *The Loon. Unusual locations 1/15–16 Pennington (near Thief River Falls) SBr, ph. JMJ, 1/23 Stearns (St. John's Abbey) BLW fide* PCC.
	avian information	2005-03-04	2005-03-25		Aitkin		3/4, 7, 8, 25 Aitkin (first county record) Largest irruption in state history detected by banding along the North Shore of Lake Superior in late fall and multiple sightings in Aitkin, Lake, and St. Louis during winter season; high mortality beginning mid-January; details will be presented in a future issue of *The Loon*. Unusual location 3/8 Polk (Fertile) NGE. One heard singing along Stony River F.R. 4/3 Lake MTA, MLH.
	avian information	2005-03-09			Polk		3/9 Polk (second county record) Largest irruption in state history detected by banding along the North Shore of Lake Superior in late fall and multiple sightings in Aitkin, Lake, and St. Louis during winter season; high mortality beginning mid-January; details will be presented in a future issue of *The Loon*. Unusual location 3/8 Polk (Fertile) NGE. One heard singing along Stony River F.R. 4/3 Lake MTA, MLH.
	avian information	2006-06-03			Koochiching		6/3 Koochiching (second summer record) Only report: 6/3 Koochiching (heard calling near Big Falls) AXH.
	avian information	2007-11-10			Douglas		11/10 Douglas (first county record) Only report: 11/10 Douglas (injured bird retrieved at Lake Carlos S.P.) fide JMJ.
	avian information	2008-03-01	2008-03-04		Aitkin		3/1, 4 Aitkin (second spring record) One bird present in a residential backyard south of McGregor 3/1–12 KCR.
	avian information	2009-01-16			Polk		1/16 Polk (third county record) A conservative estimate of 17 individuals, mostly from St. Louis and Lake counties in the Northeast, including one found dead 1/10 Lake (Two Harbors) JWL. In the Northwest, birds reported 1/7 Beltrami and 1/16 Polk ph. fide JMJ.
	avian information	2012-02-16			Marshall		2/16 Marshall (second county record) Only report was a single individual 12/17 ;Grand Marais CBC.
	avian information	2013-01-25	2013-02-20		Polk		1/25, 26, 31, 2/20 Polk (fourth county record) No reports in December and only 1/5 Cook (3 miles west of Grand Marais) BWS, 1/10 St. Louis (Sax-Zim Bog) ChH through 20 January, but then the fourth largest invasion ever commenced and extended into the spring season. While the highest numbers were in St. Louis and Lake counties, individuals were also reported from Itasca, Roseau, Marshall, and Polk beginning in late January, and from Koochiching and Aitkin in February. Farthest south report 2/17 Pine (St. Croix S.P.) MaC.
	avian information	2013-01-31	2013-02-19		Marshall		1/31, 2/19 Marshall (third county record) No reports in December and only 1/5 Cook (3 miles west of Grand Marais) BWS, 1/10 St. Louis (Sax-Zim Bog) ChH through 20 January, but then the fourth largest invasion ever commenced and extended into the spring season. While the highest numbers were in St. Louis and Lake counties, individuals were also reported from Itasca, Roseau, Marshall, and Polk beginning in late January, and from Koochiching and Aitkin in February. Farthest south report 2/17 Pine (St. Croix S.P.) MaC.
	avian information	2013-02-17			Pine		2/17 Pine (third county record) No reports in December and only 1/5 Cook (3 miles west of Grand Marais) BWS, 1/10 St. Louis (Sax-Zim Bog) ChH through 20 January, but then the fourth largest invasion ever commenced and extended into the spring season. While the highest numbers were in St. Louis and Lake counties, individuals were also reported from Itasca, Roseau, Marshall, and Polk beginning in late January, and from Koochiching and Aitkin in February. Farthest south report 2/17 Pine (St. Croix S.P.) MaC.
	avian information	2013-03-05	2013-03-06		Cass		3/5, 6 Cass (fourth county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-07	2013-03-19		Marshall		3/7, 19 Marshall (fourth county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-07	2013-04-01		Polk		3/7, 4/1 Polk (fifth county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-08			Aitkin		3/8 Aitkin (third county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-08			Sherburne		3/8 Sherburne (fourth county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-12			Crow Wing		3/12 Crow Wing (first county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-16	2013-03-17		Hennepin		3/16-17 Hennepin (fifth county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-18			Clearwater		3/18 Clearwater (second spring record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-19			Stearns		3/19 Stearns (fourth county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-03-23	2013-03-24		Clay		3/23, 24 Clay (second county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-04-21			Ramsey		4/21 Ramsey (third county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2013-05-07			Wright		5/7 Wright (first county record) The fourth largest documented irruption (*The Loon* 85:148–149) lasted into the spring with many continuing north reports, one south report of an apparently healthy bird 3/16–17 Hennepin, and multiple discoveries south of deceased individuals 3/8 Sherburne, 3/19 Stearns, 4/21 Ramsey, and 5/7 Wright (record late south, ph. fide DAC). Late north 3/24 Clay ph. fide CRG, 3/24 St. Louis (staff at the Hartley N.C.), 3/26 St. Louis (Lester River Rd.) KJB, 4/1 Polk (deceased, East Grand Forks) VLa, and approx. 4/2 Cook FJN.
	avian information	2014-02-15			Cass		2/15 Cass (fifth county record) Two reports: 2/15 Cass (found dead) ph. LTh, 2/23 Cook JaJ.
	avian information	2014-11-08			Hennepin		11/8 Hennepin The only record was exceptional! One was discovered roosting among trees being cleared in Hennepin (Plymouth) 11/8 ph. JfG.
	avian information	2018-01-05	2018-01-08		Ramsey		1/5, 6, 7, 8 Ramsey (fourth county record) In contrast to the paucity of reports in the previous four winters (five individuals total, and none in 2014 and 2015), there were many reports throughout this season, especially from St. Louis (most from various locations in the Duluth area and Sax-Zim Bog) and Lake (various locations near Lake Superior). Also reported from Aitkin, Cook (two locations), Crow Wing (two locations), Itasca, Roseau, and a new county record 2/10 Otter Tail †JsS. One south record: 1/5–8 Ramsey (Vadnais Lake) EzH, IsH, m.ob.
	avian information	2018-02-10			Otter Tail		2/10 Otter Tail (first county record) In contrast to the paucity of reports in the previous four winters (five individuals total, and none in 2014 and 2015), there were many reports throughout this season, especially from St. Louis (most from various locations in the Duluth area and Sax-Zim Bog) and Lake (various locations near Lake Superior). Also reported from Aitkin, Cook (two locations), Crow Wing (two locations), Itasca, Roseau, and a new county record 2/10 Otter Tail †JsS. One south record: 1/5–8 Ramsey (Vadnais Lake) EzH, IsH, m.ob.
	78:108-110	2006	index			Extra Rectrices on Boreal and Northern Hawk Owls

	Rare permanent resident northeast; irruptive in winter mostly north. State designation: Special Concern.

Notes:

The information in the above table comes from several different sources. The count in column 1 indicates which of the sources is considered the primary source.
	'Accepted' MOURC entries from The MOURC Proceedings
	'Not Accepted' or 'Rejected' MOURC entry from The MOURC Proceedings
	Accepted MOU records assembled by David Cahlander
	Sighting records for ()
	Avian information from the occurrence maps, in dark red, assembled by Robert Janssen. Seasonal report for the species/season published in The Loon or The Flicker has been added.
	Information from The Loon index assembled by Anthony Hertzel and David Cahlander