4/23/2007

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Migration Monitoring at TTPBRS- April 15-21

Tree Swallow (D.Derbyshire/TRCA)

The third week of April began with high winds, cold temperatures and very few migrants. With the persistent inclement weather we began to envision an immense "bottleneck" of birds to the south that would suddenly break with a shift in weather. There was no shift in the weather on the 16 and 17th and just 8 birds were banded during the two days. A near complete day of coverage on the 18th produced 10 birds banded and 12 recaptures as well as first of spring sightings of Ruddy Duck, Trumpeter Swan and Green-winged Teal. The temperatures improved on the 19th, however the wind was still from the north. Highlights of the day included observations of Merlin, Rusty Blackbird, Great Black-backed Gull and the first of many Common Terns to arrive at Tommy Thompson Park. Migration picked up on the 20th when 27 birds were banded, mainly Golden-crowned Kinglets, Hermit Thrushes and Slate-colored Juncos. The first Barn Swallows and Savannah Sparrows of the year were observed. Finally, south winds and warm temperatures returned on the 21st and a small surge of migrants was recorded. A total of 55 birds were banded on the day, which included Myrtle Warbler and Ruby-crowned Kinglet. Unusual observations included an Eastern Meadowlark and the first ever Short-eared Owl recorded at TTPBRS!

HIGHLIGHTS

Banding

Apr 17
1-American Tree Sparrow
Apr 18
2-Fox Sparrow
Apr 20
13-Slate-colored Junco
Apr 21
2-Myrtle Warbler
3-Swamp Sparrow

Observations

Apr 15
1-Great Egret
Apr 17
6-Common Loon
20-Golden-crowned Kinglet
6-Winter Wren
Apr 18
10-Common Loon
2-Trumpeter Swan
Apr 19
8-Green-winged Teal
1-Merlin
12-Tree Swallow
1-Rusty Blackbird
Apr 20
3-Yellow-bellied Sapsucker
2-Barn Swallow
30-Brown Creeper
1-Savannah Sparrow
Apr 21
1-Cooper's Hawk
6-Greater Yellowlegs
1-Ruby-crowned Kinglet
4-Savannah Sparrow (record high count)
1-Short-eared Owl (1st for TTPBRS)
1-Eastern Meadowlark

Season Banding Total
2007-351
2006-470
2005-702

Season Species Total
2007-91
2006-97
2005-97