Duplicates
The Loon, journal of the Minnesota Ornithologists' Union.
The last 2 years are available to MOU members.
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MOURC Proceedings Archive - Jaegers |
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 |
| Species: Jaegers |
|
Pomarine Jaeger |
Parasitic Jaeger |
Long-tailed Jaeger |
[Stercorarius jaeger] |
| Pomarine Jaeger (C) (Stercorarius pomarinus) | Start Date 0000-00-00 | ||||||||
| Ref | First | Last | Location | County | 2 | 3 | Comment | Status | |
|---|---|---|---|---|---|---|---|---|---|
| 31:30-32 | 1959 | index | The Jaegers of Minnesota | ||||||
| 71:156 | 1970-10-11 | Duluth | St. Louis | (record #97-37, vote 3–4, The Loon 43:95). This published record, which occurred before the Committee was formed, had not been voted on; a vote was taken this year since some felt the documentation was not adequate. The identification was based only on “the large size and steady, heavy flight of this jaeger.” However, there was no direct size comparison with any identified species of gull, which leaves the impression of size subjective and in some question. Also, Parasitic Jaegers often fly with steady and slow wingbeats when not in active, close pursuit of a gull. Therefore, although it was agreed this may well have been a Pomarine (and it was originally published as such), the majority felt it is best to consider this jaeger unidentified. | Not Accepted | ||||
| 43:95 | 1971 | index | First Pomarine Jaeger Observation for Minnesota | ||||||
| 44:88-89 | 1972 | index | Minnesota's First Verified Pomarine Jaeger | ||||||
| 1 | MOU | 1972-08-15 | Duluth | St. Louis | The Loon 44:88 | Accepted | |||
| 45:136-137 | 1973 | index | Jaegers in Duluth | ||||||
| 2 | MOU | 1973-08-05 | Duluth | St. Louis | The Loon 45:136 | Accepted | |||
| 3 | MOU | 1973-09-16 | Stoney Point, Duluth | St. Louis | The Loon 46:40 | Accepted | |||
| 46:40-41 | 1974 | index | Another Pomarine Jaeger Observed Near Duluth | ||||||
| 48:134-135 | 1976 | index | An Autumn 1976 Jaeger Invasion in Duluth | ||||||
| 48:178-179 | 1976 | index | Pomarine Jaeger at Stoney Point | ||||||
| 4 | MOU | 1976-08-12 | Duluth | St. Louis | The Loon 48:134 | Accepted | |||
| 5 | MOU | 1976-08-17 | Stoney Point, Duluth | St. Louis | The Loon 48:134 The Loon 48:178 | Accepted | |||
| 6 | MOU | 1978-09-11 | Duluth | St. Louis | The Loon 51:89 | Accepted | |||
| 7 | MOU | 1980-10-14 | 1980-10-15 | Park Point, Duluth | St. Louis | The Loon 53:57 | Accepted | ||
| 57:119 | 1980-10-15 | Duluth | St. Louis | (vote 2-5) . This 1980 record, which was originally accepted on a 5-2 vote and published (The Loon 53:113-114), was brought up for reFall 1985 consideration , and the maJonty found it to be unacceptable. Its identification was based on its "gull-like and direct" flight, "striking white patches at the base of the primaries," and "dark, wide breast band." However, such features are only subjective, and Parasitics can also appear to be, and be described, the same way. Without direct size comparison with a gull or other bird of known identity, without view of projecting central rectrices (neither was the case here), it takes an observer with frequent contact with jaegers to make a positive identification on such subjective field marks (and none of us in Minnesota sees enough jaegers here to qualify). | Not Accepted | ||||
| 57:119 | 1980-10-15 | Duluth | St. Louis | (vote 2-5) . This 1980 record, which was originally accepted on a 5-2 vote and published (The Loon 53:113-114), was brought up for reFall 1985 consideration , and the maJonty found it to be unacceptable. Its identification was based on its "gull-like and direct" flight, "striking white patches at the base of the primaries," and "dark, wide breast band." However, such features are only subjective, and Parasitics can also appear to be, and be described, the same way. Without direct size comparison with a gull or other bird of known identity, without view of projecting central rectrices (neither was the case here), it takes an observer with frequent contact with jaegers to make a positive identification on such subjective field marks (and none of us in Minnesota sees enough jaegers here to qualify). | Not Accepted | ||||
| 53:57-58 | 1981 | index | Pomarine Jaeger at Park Point | ||||||
| 53:113-114 | 1981 | index | Pomarine Jaeger, Minnesota Point | ||||||
| 54:244 | 1982 | index | First Spring Record for a Pomarine Jaeger | ||||||
| 54:248-249 | 1982 | index | Another Pomarine Jaeger in Duluth | ||||||
| 8 | 54:147 | 1982-05-20 | Minnesota Point, Duluth | St. Louis | (vote 7-0) The Loon 54:228 The Loon 54:244 | Accepted | |||
| avian information | 1982-05-20 | St. Louis | 5/20 St. Louis (first spring record) 5/20 Duluth RJ, DB, R. Ruhme, R. Glassel, 5/22 Duluth MH sp.? | ||||||
| 9 | 54:41 | 1982-09-06 | Duluth | St. Louis | (vote 7-0, Loon 54:248-249) | Accepted | |||
| 62:12 | 1989-09-16 | Duluth | St. Louis | (vote 3-4). Although the details were good enough to indicate a jaeger was seen, the features noted were too subjective to positively indicate a Pomarine. This identification was based on the overall size, manner of flight and the amount of white in the wings; however, no direct comparison was available for these field marks to be diagnostic enough to eliminate Parasitic Jaeger. Similar to "Herring Gull in size" and "more prominent". white in the wing both suggest a Pomarine, but too much doubt remains without comparisons. The "slower and less maneuverable" flight described can just as easily fit a Parasitic Jaeger when not in pursuit. | Not Accepted | ||||
| 62:12 | 1989-11-10 | Weaver | Wabasha | (vote 0-7). This bird was identified as a jaeger because of a slight "bump" on the tip of the center of the tail and the "all -brown" overall color which was thought to be too dark for an immature gull . However, a gull in molt can easily show a bump similar to that described, and a juvenile/first-winter Herring Gull can appear dark brown as described here. Also, even if it were a jaeger, the observer's subjective impressions of larger size and slower flight do not eliminate Parasitic Jaeger since no direct size comparison was made and since Parasitics can also fly at a slow pace when not in pursuit of prey. | Not Accepted | ||||
| 66:209-210 | 1994 | index | Pomarine Jaeger at Park Point | ||||||
| 10 | 67:45 | 1994-09-20 | Duluth | St. Louis | (The Loon 66:209–210). | Accepted | |||
| avian information | 1996-11-08 | 1996-11-24 | Goodhue | 11/8-24 Goodhue (first state record) (first county record) Exceptional report away from Lake Superior and the latest date ever for any species of jaeger in the state: 11/8–24 Wabasha KB, mob (The Loon 69:3–6). | |||||
| 11 | 69:152 | 1996-11-08 | 1996-11-13 | Lake Pepin | Wabasha | Goodhue | (record #97–09, vote 7–0, The Loon 69:3–6). | Accepted | |
| avian information | 1996-11-08 | 1996-11-24 | Wabasha | 11/8-24 Wabasha (second state record) (first county record) Exceptional report away from Lake Superior and the latest date ever for any species of jaeger in the state: 11/8–24 Wabasha KB, mob (The Loon 69:3–6). | |||||
| 71:156 | 1998-09-26 | Duluth | St. Louis | (record #99-04, vote 3–4). The identification essentially relied on the jaeger being larger and “heavier bodied with slower wing beats and gulllike flight” than the jaeger flying next to it, and by its “blunt” projecting central tail feathers. However, the majority felt the possibility of the larger bird being a Parasitic Jaeger is not precluded, since the smaller jaeger with it might possibly have been a Long-tailed. (This smaller jaeger was described as having a “ternlike flight” and “pointed” central rectrices “maybe three inches long,” and both of these features would be consistent with a subadult Long-tailed.) And while the central rectrices of the jaeger in question were described as “blunt,” this is not synonymous with rounded. The possibility also remains that both jaegers might have been the same species (e.g., Parasitic), since female jaegers can appear noticeably larger than males of the same species. Clark's Grebe, 30 August 1998, Agassiz N.W.R., Marshall Co. (record #99-05, vote 1–6). The most useful field mark to separate Clark's Grebe from Western — bill color — was apparently not noticed or described. In addition, the description of the facial pattern is ambiguous, with the black cap extending “down to the top of the eye.” | Not Accepted | ||||
| 12 | 72:40 | 1999-09-08 | 1999-09-25 | Duluth | St. Louis | (record #99– 61, vote 7–0). | Accepted | ||
| 13 | 72:40 | 1999-11-22 | Vineland | Mille Lacs | (record #99–67, vote 7–0, The Loon 72:56–58). | Accepted | |||
| avian information | 1999-11-22 | Mille Lacs | 11/22 Mille Lacs (third state record) (first county record) One juvenile 9/8–25 St. Louis (Canal Park in Duluth) DBu, †PS et al. is apparently only the second Pomarine ever photographed in Minnesota. The first is shown on the cover of The Loon 44(3). Another juvenile 11/22 Mille Lacs (Vineland Bay on Mille Lacs L.) †PS, †AH is only the second ever found away from L. Superior (The Loon 72:56–59). Late fall dates are typical for this species in the Great Lakes Basin (Sherony and Brock 1997, Jaeger Migration on the Great Lakes, Birding 29:372–385). | ||||||
| 14 | 73:35 | 2000-09-23 | Duluth | St. Louis | (record #2000-80, vote 6–1). The Loon 73:177 | Accepted | |||
| 15 | 74:36 | 2001-09-19 | Duluth | St. Louis | (record #2001-55, vote 7–0,). Jaeger identification is typically difficult, but this individual was an adult with a fully grown tail and seen at relatively close range. The Loon 74:57 | Accepted | |||
| 16 | 77:9 | 2004-09-07 | Duluth | St. Louis | (record #2004090, vote 7–0). Sight record of one juvenile. Its size was compared to all nearby Ring-billed Gulls. Its bicolored bill, dark brown head and neck, “chesty†profile, wing width at the base compared to the distance from the trailing edge of the wing to the tail tip, contrastingly pale rump and uppertail coverts, and heavily barred belly and under-tail coverts, were all noted. Also see Not Accepted record #2004-097. The Loon 77:117 | Accepted | |||
| 77:9 | 2004-09-18 | Superior Entry | St. Louis | (record #2004-097, vote 1–6). This juvenile jaeger was seen at close range by three experienced observers, two of whom submitted documentation. Unfortunately, the two descriptions were inconsistent regarding critical facets of the identification. One observer stated “belly lighter than flanks yet heavily barred with dark and light pattern” while the other observer's drawing showed clean white undersides labeled “white breast/belly.” Other discrepancies concerned color of under-tail coverts and whether or not the bill was seen. The identification relied in part on the presence of a “strong double underwing flash.” This is not an infallible criterion for Pomarine Jaeger according to Olsen and Larsson (Skuas and Jaegers, 1997). Identification also relied upon size — the jaeger was said to be either “not larger than a Ring-billed Gull” or “as big or slightly bigger than Ring-billed Gull.” Depending on the sex and age of the species in question, both Parasitic and Pomarine jaegers may appear similar in size to a Ring-billed, so size comparison with more than one or two gulls is needed; Record #2004-091, Lark Bunting, 6 September 2004, Duluth, St. Louis County. Digital photo by Mike Hendrickson. reverse sexual size dimorphism in jaegers makes big female Parasitics overlap in size with small female Ring-billed Gulls. | Not Accepted | ||||
| 17 | 79:50 | 2006-09-06 | 2006-10-04 | Park Point, Duluth | St. Louis | (record #2006-076, vote 7–0 for first individual, vote 5–2 for second individual). One was seen regularly off Park Point for nearly a month, then two juveniles were seen together 4 October; presumably, one or both birds were responsible for reports of this species at the Superior Entry in late September. The Loon 79:89 The Loon 79:116 | Accepted | ||
| 18 | 79:123 | 2006-10-15 | 2006-10-19 | Eagle Lake | Blue Earth | (record #2006088, vote 6–1). Only the third Minnesota record of this species away from Duluth and one of very few ever photographed in the state. The Loon 79:89 The Loon 79:117 | Accepted | ||
| avian information | 2006-10-15 | 2006-10-19 | Blue Earth | 10/15-19 Blue Earth (fourth state record) (first county record) One juvenile 9/6–10/4 St. Louis (Park Point, Duluth) ph. †PHS, †KRE, m.ob. was joined by a second bird 10/3 only †JWL. Most unusual was a juvenile 10/15–19 Blue Earth (Eagle Lake) †RMD; it was refound by †CCB, ph. †JPM, m.ob., and furnished only the third record of this species away from Lake Superior. | |||||
| 79:116 | 2007 | index | Juvenile Pomarine Jaeger at Park Point | ||||||
| 79:117 | 2007 | index | Pomarine Jaeger in Blue Earth County | ||||||
| 80:5 | 2007-09-23 | Park Point, Duluth | St. Louis | (record #2007067, vote 1–6). The identification was based primarily on subjective impressions of shape and flight style. Most of the described characters would also fit other jaeger species. Size was reported to be similar to surrounding Herring Gulls (Larus argentatus); this is incorrect for any species of jaeger, including Pomarine Jaeger, which averages just larger than a Ring-billed Gull (L. delawarensis). | Not Accepted | ||||
| 19 | 82:3 | 2009-06-03 | Lake Superior | St. Louis | (record #2009-030, vote 7–0 for first individual, vote 6–1 for second individual). Eighteenth state record. Two adult or subadult jaegers observed from a boat about one mile off Park Point, Duluth. First June record and first occurrence of more than one individual. The Loon 82:20 The Loon 82:46 | Accepted | |||
| avian information | 2009-06-03 | St. Louis | 6/3 St. Louis (second summer record) Eighteenth state record and first for summer season 6/3 St. Louis (2 observed from boat on Lake Superior, about a mile off Park Point, Duluth) †JLK. | ||||||
| 20 | 83:99 | 2010-10-12 | Duluth | St. Louis | (record #2010-040, vote 7–0). The Loon 83:68 two juveniles | Accepted | |||
| 21 | 84:3 | 2011-10-02 | Duluth, Minnesota Point near Sky Harbor Airport | St. Louis | (record #2011-041, vote 7–0). The excellent photos, plus detailed descriptions from two experienced observers, leave no doubt about the identification. Eighteenth state record (The Loon 84:54–55). The Loon 84:4 | Accepted | |||
| 22 | 91:3 | 2018-10-14 | Point Douglas Park | Washington | (record #2018-044, vote 7–0). First county record. Adult, photographed. | Accepted | |||
| avian information | 2018-10-14 | Washington | 10/14 Washington (fifth state record) (first county record)  An advanced immature or adult type was discovered 10/14 Washington (Point Douglas) BAb, ph. † RMD, ph. LMS, ph. † EzH, † PCC, ph. IsH. This is only the fourth record away from Lake Superior. | ||||||
| avian information | 2021-12-01 | Sherburne | 12/1 Sherburne (sixth state record) (first county record) One record: 12/1 Sherburne (dark morph juvenile, Elk River landfill) ph. †JOs, †PLJ, †MAJ. This is the first winter season record in the state of any jaeger. | ||||||
| Twenty-one records: 1 spring, 1 summer, and 19 fall. Recorded in four of the last ten years, most recently 2018. There are additional records of unidentified Stercorarius sp. | |||||||||
| 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 | ||