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April 15-21 2004
Update on Migration Monitoring results from Tommy Thompson Park for
the week of April 15th-21st, 2004

The week began with very light migration again but the arrival of the
seasons first warm front on the 17th did produce some busier mornings in
terms of species diversity, although we still have yet to really encounter
any major movements of landbirds at the park. White-throated Sparrow,
Hermit Thrush and Ruby-crowned Kinglet numbers have increased
substantially in the past few days. 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
6-Fox Sparrow on April 16
2-Myrtle Warbler on April 17 (1st bandings of spring)
1-Brown Thrasher on April 18 (1st)
1-Field Sparrow on April 19 (1st)
2-Pine Warbler on April 19 (1st)
14-White-throated Sparrow on April 21

Observations
1-Glaucous Gull on April 15 (project 1st)
6-Bonaparte's Gull on April 15
1-Eastern Towhee on April 16
1-Eastern Meadowlark on April 17 (project 1st)
2-Pine Siskin on April 19
1-Chipping Sparrow on April 19
2-Barn Swallow on April 19
1-Bank Swallow on April 19
14-Myrtle Warbler on April 19
5-Common Tern on April 19
1-Purple Martin on April 21
17-Bonaparte's Gull on April 21

Totals:

Season Banding Total
270

Season Species Total
98

Dan Derbyshire
Migration Monitoring Coordinator
TRCA