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4/22/2005

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Migration Monitoring-April 15-21

The weather was very pleasant during the update period resulting in some meager totals for the week. A total of 90 net hours on the 15th yielded just 3 birds banded! Northern Rough-winged Swallow and Blue-winged Teal were season firsts on this day. A good variety of birds were banded on the 16th, however the overall total was still low at 27. The highlight of the day was a Silver-haired Bat found sleeping under one of the banding lab shutters! The 17th saw the arrival of Palm Warbler and Savannah Sparrow. For the first time this spring, Ruby-crowned Kinglet totals were higher than Golden-crowned. The 18th and 19th were quiet with approx. 20 birds banded/day. The first major increase in White-throated Sparrow numbers were evident on the 19th as 30 were tallied. New arrivals on the 20th were Northern Waterthrush, Brown Thrasher and Blue Jay. The day also featured a small influx of Myrtle Warblers. Eighteen birds were banded on April 21 which included a decent number of Hermit Thrush (7 banded). An American Bittern flew over the research station on this day, this is only the second record of this species for TTPBRS.
 
Below is an excerpt from the April 15-21 update in 2004 (Pine Warbler has yet to appear in 2005)
 
"The most notable data from the spring thus far has been a good showing for Pine Warbler, as 4-6 are being tallied on a daily basis (sometimes eclipsing Myrtles!)"
 
HIGHLIGHTS
 
BANDING
April 16
1-Yellow-bellied Sapsucker
1-Eastern Towhee
17
6-Ruby-crowned Kinglet
1-Savannah Sparrow (3rd banding record for TTPBRS)
18
2-Field Sparrow
20
1-Northern Waterthrush (Record early)
21
2-Myrtle Warbler
 
OBSERVATIONS
April 17
2-Common Loon
16-Hermit Thrush
5-Myrtle Warbler
1-Palm Warbler
19
2-Sharp-shinned Hawk
2-Savannah Sparrow
20
1-Red-necked Grebe
1-Brown Thrasher
21
American Bittern (2nd record for TTPBRS)
 
Season Banding Total
2005-668
2004-270
 
Season Species Total
2005-97
2004-98
 
Dan Derbyshire
Tommy Thompson Park Bird Research Station
Toronto and Region Conservation (TRCA)