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6/11/2006

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Migration Monitoring at TTPBRS-June 3-9


Cedar Waxwing- detail of "wax" appendages (derbyshire)

Note on photo-These red tips on the ends of waxwing secondaries are flat extensions of the feather shafts and are composed of keratin (same material as hair and fingernails). The tips derive their colour from astaxanthin, a caretenoid pigment that is ingested from certain foods.
This is the final update on spring migration monitoring at TTPBRS in 2006. Thursday, June 8 was our last day of coverage providing closure to a week that was typically quiet for the time of year. Banding totals reached a low of 8 on June 4 and a high of 28 on June 7. Migrant species were captured on a daily basis, the most notable of which were Gray-cheeked Thrush, Swainson's Thrush and Yellow-bellied Flycatcher. June 3rd featured a small trickle of passing warblers including Blackburnian, Blackpoll, Northern Waterthrush and Wilson's Warbler. On June 5 a good selection of flycatcher species were evident along with another Blue-winged Warbler. Most of the birds banded on June 6 and 7 were captured on the first two net rounds and were almost entirely late migrant thrushes. Of note on the 7th was the banding of 4 Ovenbird, 1 Canada Warbler and the discovery of a Great-horned Owl near nets 10 -11. Great-horned Owl is often heard and sometimes seen during our Northern Saw-whet Owl Monitoring Program in late fall but the bird on June 7 was the first ever encountered during the day at TTPBRS!

Spring 2006 was yet another successful season of fieldwork and on behalf of Toronto and Region Conservation I would like to thank all of the volunteers who made it possible! The Tommy Thompson Park Bird Research Station will reopen on August 5th for the start of fall migration. In the meantime staff and volunteers will be busy collecting data on breeding birds all over the GTA as well as entering and proofing spring migration data. News, photos and summaries from our summer work will be added to our website on a regular basis: http://ttpbrs.blogspot.com

WEEK HIGHLIGHTS

Banding

June 3
1-Blackburnian Warbler
1-Northern Waterthrush
June 4
2-Blackpoll Warbler
June 5
3-Yellow-bellied Flycatcher
1-Blue-winged Warbler
2-Black-throated Green Warbler
June 6
7-Gray-cheeked Thrush
7-Swainson's Thrush
June 7
4-Ovenbird

Observations

June 3
1-Yellow-billed Cuckoo
June 4
20-Semipalmated Sandpiper
June 7
1-Great-horned Owl

Season Banding Total
2006-2549
2005-2547
2004-2525

Season Species Total
2006-177
2005-172
2004-172