[Golden-winged Warbler X Blue-winged Warbler](Vermivora chrysoptera X V. cyanoptera) |
Year | Season | N | S | |
1968 | Spring | | | two reports of the "Brewster's" phenotype: 5-15 Minneapolis, FN/ MAS; 5-22 Alma, Wisconsin adjacent to Wabasha Co., Minnesota, DGM. |
2011 | Spring | | | “Lawrence's” hybrid 5/26 Blue Earth (Minneopa S.P.) RBJ. |
2013 | | 1 | | A "Brewster's" Warbler was photographed 5/23 Pine County ph. DAC. |
2013 | Spring | | | A “Brewster's” Warbler was photographed 5/23 Pine County ph. DAC. |
2013 | Summer | | 1 | One “Brewster's” found 6/1 Carver (Carver P.R.) JCy. |
2014 | Spring | | 5 | More reports than usual of these apparent hybrids: 5/7 Ramsey (Vista Hills Park) †MJM, 5/8–12 Hennepin (Veterans Memorial Park, Richfield) ph. SBM, 5/13 Hennepin (Rock Garden near Lake Harriet) KvB, ToL, 5/16 Fillmore TAT, 5/17 Hennepin (Eloise Butler Wildflower Garden) GrS, 5/21 Steele (Saco Farm Woods & Fields) †PSu, 5/21–24 Carver (possibly the same bird seen spring 2013 at the same location) JCy. All were described or photographed as a variant of the Brewster's backcross form, except for the Rock Garden bird which was not described. |
2014 | Summer | | 1 | "Lawrence's" Warbler seen 6/14 Blue Earth (Minneopa S.P.) ph. ChH. |
2014 | Fall | 1 | 3 | Four hybrids reported this season: 8/17–23 St. Louis (“Brewster's”, Park Point R.A.) JLK, †PHS, KRE, 8/23 Washington (“Brewster's”, Paul Hugo Farms W.M.A.) †RMD, 8/25 Carver (Carver P.R.) PTn, 8/28 Dakota (“Lawrence's”, Lebanon Hills R.P.) ADS. |
2015 | Spring | | 1 | Apparent hybrids, both of the “Brewster's” form, were found 5/11 Steele (2) ph. †PSu. |
2015 | Fall | | 1 | One “Brewster's” found 8/19 Carver JCy. |
2016 | Fall | | 1 | All reports were of Brewster's-type hybrids: 8/14 Carver (Minnesota Landscape Arboretum) JCy, 8/21 Carver (Rapids Lake, Minnesota Valley N.W.R.; with a male and female/immature Golden-winged) JCy, 8/22 Benton MJB, 8/25, 8/28 Dakota (Spring Lake P.R.) KDS, AJF. |
2017 | Spring | | 3 | All reports 5/11 Hennepin (Lakewood Cemetery, Brewster's) TAT, 5/16 and 5/24 Carver (Carver P.R., mostly resembled Brewster's) JCy, 5/23 Washington (William O'Brien S.P., Brewster's) BDo, PNi. |
2017 | Fall | | 3 | Brewster†™s-type hybrids were reported south: 8/18–19 Ramsey (Sucker Lake) LiH, ASu, MiS, DnS, 8/27 Stearns PCC, 9/19 Dakota (Lilydale R.P.) JDv. |
2018 | Spring | 1 | 1 | All reports of this hybrid pertained to the “Brewster's” form: 5/10 Scott (Murphy-Hanrehan P.R.) BrT, TSk, 5/26 Pine KrM. |
2018 | Fall | | 1 |  One report of †œBrewster†™s† Warbler† 8/30 Hennepin (Lone Lake Park) MJM. |
2019 | Spring | 2 | 6 | All reports describe the †œBrewster†™s† form: 5/18 Pine (Snake River Campground) KrM, LiH, 5/20 Brown (Flandrau S.P.) SLH. 5/23 Otter Tail (Maplewood S.P.) WPl, 5/24 Hennepin (Wood Lake N. C.) ebd, (Veterans Memorial Park) MGi, 5/25 Isanti DWK, 5/26 Carver (Carver P.R.) JCy, 5/30 Wright (Stanley Eddy Park) ToL, 5/31 Scott (Murphy-Hanrehan P.R.) MwT. |
2019 | Summer | | 1 | Â Only report 6/2 Houston (Richard J. Dorer S.F., Gordon Anderson R.A.) IVa. |
2019 | Fall | | 2 | One †œLawrence†™s† reported 8/31 Carver (Minnesota Valley N.W.R., Rapids Lake) JCy. One †œBrewster†™s† seen 9/2 Anoka (Linwood Lake) CF. |
2020 | Spring | | 6 | One “Lawrence’s” 5/4 Houston SHo. Five “Brewster’s” 5/17 Stearns †PCC, Steele PSu, 5/19 Dakota (Red Oak Park) AFo, 5/22–29 Isanti (Irving and John Anderson C.P.) JCC, ph. DWK, DPG, 5/24 Dakota (Whitetail Woods R.P.) DVe. Two didn’t fit either type well: 5/13 Ramsey (Hidden Falls R.P.) JbS, 5/16 Steele PSu. |
2020 | Fall | | 3 | All “Brewster’s” type unless specified otherwise: 8/12 Washington (Afton S.P.) ELi, 8/21 (Oakdale Nature Preserve; unknown type) JDS, 9/1 Olmsted (Quarry Hill N.C.) JPr, 9/9 Ramsey (Lake Como) JKu. |
2021 | Spring | | 5 | Two “Lawrence’s”: 5/11 Washington (near Stillwater) ph. CWg, 5/29–31 Olmsted (Chester Woods) ph. BLa, JPr, ebd. “Brewster’s” reported 5/12 Rice TFB, 5/14 Carver (Carver P.R., Grimm Rd.) JCy, 5/15 Rice (Cannon River Wilderness Park) NiR, 5/28–30 Wright (Stanley Eddy Memorial Park) ph. DRL. |
2021 | Summer | | 2 | Hybrids of unspecified phenotype reported 6/1 Olmsted ebd, 6/9–10 Hennepin LSy, SGt. “Brewster’s” Warbler seen 6/3–7 Wright DCk, 6/19 Washington ebd, 6/23 Dakota ebd. |
2021 | Fall | 1 | 4 | Best fall season in at least the past decade. All are Brewster’s type unless noted otherwise. Only north 8/12 St. Louis (Park Point R.A.) ph. †IDv. All south 8/12 Stearns (Mississippi River C.P.) DOr, 8/24 Ramsey (Lawrence’s, Chatham Open Space) ph. †LiH, 9/2 Washington (Afton S.P.) ph. PAl, 9/6 Hennepin (unknown type, Old Cedar Ave. Bridge) ebd. |
2022 | Spring | | 9 | Probably the best season ever for this hybrid. Eleven individuals, eight of which were “Brewster’s” type. All reports: 5/10 Ramsey (Indian Mounds Park) †ebd, 5/12–15 Dakota (Rolling Green Pond) †ebd, 5/12 Hennepin (“Lawrence’s”) AOp, †ebd, 5/13 Brown †SLH, 5/14–15 Olmsted (second consecutive year of a “Lawrence’s” at Chester Woods), †BLa, m.ob., 5/14 Ramsey (Vadnais Lake) ebd, GUn, 5/14 Stearns NSg, m.ob., 5/15–19 Dakota (Ritter Farm Park) ChP, RDE, ebd, 5/15 Scott (“Lawrence’s”) †BHe, 5/17 Washington PNi, 5/20 Carver JCy. |
2022 | Summer | 1 | 3 | All south 6/4 Wright (“Brewster’s” singing Golden-winged song, Stanley Eddy Memorial Park) DCk, 6/8 Washington (Arcola Bluffs Day Use Area) ebd, 6/26 Dakota (“Brewster’s”) DFN. Extraordinary north report 7/22 St. Louis (2, Stony Point; “Brewster’s” seen following a Golden-winged female and a Blue-winged male along Alseth Rd.) †JLK. |
2022 | Fall | | 4 | Two “Lawrence’s” 8/7 Carver (Carver P.R., Grimm Rd.) JCy, 8/27 Le Sueur (Sakatah Cemetery) BAb, and two “Brewster’s” 8/28 Anoka (Rice Creek Chain of Lakes P.R.) GWe, 9/10 Hennepin (Old Cedar Ave. Bridge) ebd. |
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  | Hybrid Species. |