Migration Monitoring at TTPBRS-May 13-19

Black-and-white Warbler (derbyshire)

Weather during the past week was dominated by high winds from the east, north and west and a fair bit of rain which resulted in fewer birds than "normal" for this period of spring migration. May 12 featured a surge of Least Flycatcher and White-throated Sparrow and the arrival of American Redstart and Magnolia Warbler. Also on this day was the observation of the second Clay-colored Sparrow this spring. On May 13 Toronto and Region Conservation celebrated the International Migratory Bird Day in conjunction with the annual "Bring Back the Birds Festival." It was very quiet for birds on this day although staff and volunteers provided some excellent demonstrations and events for the public. Heavy winds on the 14th resulted in only 1.5 hours of banding although small pockets of birds were observed which included a Bay-breasted Warbler and an unforgettable sighting of recently hatched American Woodcocks performing an amusing synchronized display. High winds again on the 15th limited bird migration however a stunning male Scarlet Tanager was observed. Warblers were much in evidence on the 16th as high totals were tallied for Tennessee, Nashville, Magnolia, Black-throated Green and Blackburnian. The first record of Grasshopper Sparrow at TTPBRS was seen by all near the junipers on the north trail. A total of 63 birds were banded on the 17th which included a good selection of warbler species and an increase in numbers of Veery, Swainson's Thrush and Lincoln's Sparrow (13 Lincoln's banded). The day also featured another Clay-colored Sparrow. Rain moved in mid-morning on the 18th which abbreviated a productive morning of fieldwork that yielded a Lesser Black-backed Gull (1st for TTPBRS) and an influx of shorebirds, mainly Semipalmated Plover, Ruddy Turnstone and Dunlin. The high winds and rain finally relented on the 19th which led to a full morning of banding and surveys and a total of 60 birds banded and 76 total species detected. Of note on this day were the first banding records of Dunlin and Least Sandpiper for TTPBRS.



May 12
2-Wood Thrush
1-Cape May Warbler
May 13
1-Blue-winged Warbler
May 16
2-Wood Thrush
1-Mourning Warbler
May 17
1-Eastern Phoebe
1-Blue-headed Vireo
7-Magnolia Warbler
1-Savannah Sparrow
May 18
1-Canada Warbler
May 19
2-Least Sandpiper (1st banding record for TTPBRS)
1-Dunlin (1st banding record for TTPBRS)


May 12
14-Least Flycatcher
7-Rose-breasted Grosbeaks
75-White-throated Sparrow
1-Clay-colored Sparrow
May 13
1-Canada Warbler
May 15
14-Blue Jay
1-Northern Parula
May 16
6-Red-eyed Vireo
14-Chestnut-sided Warbler
22-Magnolia Warbler
18-Black-throated Green Warbler
10-Blackburnian Warbler
8-Bay-breasted Warbler
3-Scarlet Tanager
1-Grasshopper Sparrow (1st record for TTPBRS)
May 17
20-Lincoln's Sparrow
1-Clay-colored Sparrow
May 18
4-Semipalmated Plover
1-Lesser Black-backed Gull (1st record for TTPBRS)
May 19
50-Magnolia Warbler
25-Chestnut-sided Warbler
3-Cape May Warbler
24-Black-throated Green Warbler

Season Banding Total

Season Species Total

Dan Derbyshire
Coordinator, Tommy Thompson Park Bird Research Station (TTPBRS)
Toronto and Region Conservation
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