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Olive-sided "onslaught" @ Wheaton Regional Park

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Mon, 22 Aug 2011 11:22:57 -0400

Hi all --

We had tortured Paul Pisano enough so decided to call it quits -- well, it 
was getting windy anyway...

Anyway, as has been posted, we had TWO OLIVE-SIDED FLYCATCHERS 
at Wheaton Park/Brookside Gardens today. There may even have been a 
third if Mike Bowen's bird was seen at same time as the other two. The 
first we saw at 7:15 as we entered the Shorefield Rd. picnic area lot 
(where the carousel and mini-train are) -- at the top of snags of a large 
dying oak just to the right as you drive in. We screeched to a halt and 
enjoyed the bird -- appeared to be a hatch year based on its rather faint, 
streaked "vest" -- showing its prominent white flank patches and called 
several times, "Whip! Whip!" The second was on a tall snag in the Visitor 
Center parking lot of Brookside Gardens (a traditional spot) -- this a dark 
adult bird -- at about 9:20 AM. This confirms our feeling that this park is 
one of the best places around to see this species, in part because there 
are a LOT of tall dead snags adjacent to large open foraging areas such 
as Pine Lake, various fields as well as several parking lots. It is good
for 
flycatchers in general, for example today we had 4 other species and a 
fifth (Least FC) was seen by another birder.

We also had a good selection of other migrants, as might be expected on 
this, the first decent cold front of the fall. Most interesting, besides
the 
OSFL was a  BREWSTER'S WARBLER -- very similar to the "first fall male" 
illustrated in Jon Dunn's Warblers book (Plate 3) -- that is, yellow 
underneath, very green back, crown and greenish wings, two pale yellow 
wingbars.

A good selection of other migrants (7 warbler species) rounded out the 
list:

Birds of interest:

Green Heron - 5
Red-shouldered Hawk - 1
Chimney Swift -- 10+ 
Ruby-throated Hummingbird - 7
OLIVE-SIDED FLYCATCHER - 2
Eastern Wood-pewee - 8
Great Crested Flycatcher - 3
Acadian Flycatcher - 2 (both very fresh plumage)
"Traill's" Flycatcher - 2 (also very fresh plumage, one quite contrasty so
a 
possible Alder)
Empid sp. - 2 (not good enough looks to try to ID)
Red-eyed Vireo -- 15
House Wren - 4 (3 were recent fledglings from the late brood)
Blue-gray Gnatcatcher - 10
Eastern Bluebird - 2
Blue-winged Warbler - 1 (typical individual)
BREWSTER'S WARBLER - 1
Chestnut-sided Warbler - 1
Magnolia Warbler - 1
Black-and-White Warbler - 1
American Redstart - 7
Common Yellowthroat - 1
Canada Warbler - 2
Scarlet Tanager - 2
Eastern Towhee - 3
Chipping Sparrow - 15+
Baltimore Oriole - 3

Gail Mackiernan and Barry Coope
Colesville, MD





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