This autumn, as in past years, I have
been counting birds migrating over Lake Michigan from shoreline
overlooks at
Hoffmaster State Park and
Lake Harbor Park.
September,
unusually warm, had been very slow for waterfowl, but
numbers quickly
increased when the temperatures cooled at the end of the month.
In
October, I accrued
17.5 hours, and recorded the following
43 species
(
3184 individual birds):
Canada Goose - 24
Wood Duck - 2
Gadwall - 298 (60 on Oct. 12)
American Wigeon - 70
American Black Duck - 4
Mallard - 152
Blue-winged Teal - 64
Northern Shoveler - 7
Northern Pintail - 4
Green-winged Teal - 16
Canvasback - 26
Redhead - 48
Greater Scaup - 6
Lesser Scaup - 703 (243 on Oct. 7)
Surf Scoter - 18 (first on Oct. 2)
White-winged Scoter - 6 (first on Oct.
15)
Black Scoter - 4 (Oct. 14)
Long-tailed Duck - 427 (first on Oct.
9)
Bufflehead - 4
Common Goldeneye - 1
Common Merganser - 12
Red-breasted Merganser - 104 (first on
Oct.7)
Red-throated Loon - 6
Common Loon - 45 (29 on Oct. 30)
Horned Grebe - 26
Double-crested Cormorant - 275
Bald Eagle - 1
Northern Harrier - 1
Red-tailed Hawk - 1
Merlin - 1
Sanderling - 2
American Woodcock - 1
Bonaparte's Gull - 626 (218 on Oct. 14)
Ring-billed Gull - 106
Herring Gull - 23
Glaucous Gull - 1 (Oct. 22)
Great Black-backed Gull - 1 (Oct. 23)
Caspian Tern - 1 (Oct. 15)
Common Tern - 2
American Crow - 46
Horned Lark - 3
American Pipit - 8
Snow Bunting - 8 (first on Oct. 23)
The biggest surprise was an American
Woodcock flying east low over Lake Michigan to the dunes at 10:21 a.m. on October 23. Earlier that morning, an adult male Northern Harrier
also flew east over the lake while closely pursued for a full minute
by an immature Herring Gull.
Many passerines, only a few of which I
could identify to species, also flew east against headwinds to the
dunes on various days. Most successfully navigated the gull gauntlet; some did not.
I occasionally see bats doing the same. A Red Bat on Oct. 8 was the
last.
- Brian Johnson