Migration Monitoring at TTPBRS-April 29-May 5

Eastern White-crowned Sparrow (d.derbyshire)

The week of April 29-May 5 was very good as impressive numbers of sparrows passed through and some brightly coloured new arrivals appeared! April 29 was relatively quiet as 22 birds were banded of 7 species which included 8 Hermit Thrush. The wind switched to the east late on the 29th which improved the birding on the 30th as 59 birds were banded and we encountered the first Least Sandpiper and Rose-breasted Grosbeak of the spring. Birds likely took advantage of the favourable conditions after the prolonged April headwinds and a constant turnover of migrants occurred throughout the week. This is our fourth consecutive spring of migration monitoring and we are accustomed to seeing significant numbers of White-throated Sparrows during the first week of May. On May 1 a total of 110 birds were banded which included 57 White-throated Sparrows and also 14 Hermit Thrushes. Another pulse of migrants was detected on May 2nd when 94 birds were banded which included 51 White-throated Sparrow, 5 Myrtle Warbler and a smattering of other lingering early spring species. May 3rd was more of the same except for a major influx of White-crowned Sparrow and the first sightings of Veery and Northern Waterthrush this spring. Several new arrivals were noted on the 4th of May including Least Flycatcher, Ovenbird and the first Clay-coloured Sparrow for TTPBRS. Another highlight on this day was the capture of a Red Bat! There was a lesser movement on May 5 but a good variety as singles of Blackburnian and Orange-crowned Warbler were recorded.



Apr 30
1-American Woodcock
1-Black-and-white Warbler
1-Rose-breasted Grosbeak
1-Chipping Sparrow
1-Lincoln's Sparrow
May 1
2-House Wren
2-Gray Catbird
9-Swamp Sparrow
May 3
6-Ruby-crowned Kinglet
7-Myrtle Warbler
5-Palm Warbler
May 4
1-Blue-headed Vireo
2-Nashville Warbler
May 5
1-Orange-crowned Warbler


Apr 29
2-Black-bellied Plover (early record)
Apr 30
34-Hermit Thrush
125-White-throated Sparrow
2-Least Sandpiper (early record)
May 1
60-Hermit Thrush
160-White-throated Sparrow
105-Red-winged Blackbird
12-Rusty Blackbird
May 2
1-Purple Martin
6-Brown Thrasher
1-Yellow Warbler
1-Forster's Tern
May 3
1-Northern Waterthrush
3-Lincoln's Sparrow
4-Baltimore Oriole
May 4
4-Least Flycatcher
5-American Pipit
12-Yellow Warbler
44-White-crowned Sparrow
1-Clay-coloured Sparrow (1st record for TTPBRS)
May 5
1-Blackburnian Warbler

Season Banding Total

Season Species Total

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