Migration Update- April 28. 2009

piwa
Pine Warbler, Canoe Lake Road

Migrants arrived in high numbers over the weekend! The recent warm front was brief but a “cooker” nonetheless, bringing an excellent variety of insectivorous migrants to southern Ontario. This mornings survey along Canoe Lake Road featured overcast skies, warm temperatures and a sharp increase in budding foliage. Emerging ground cover species including Dutchman’s Breeches, Bloodroot and Large-flowered Trillium have brightened up the forest floor and American Toads are suddenly the most vocal of amphibians in the area.  I also spent the 60 minutes of the survey entertaining an attendant mob of excited Black Flies, which was a less welcome change from recent days!

redtrillium
Large-flowered Trillium (red morph)

Semi-daily surveys of migrant birds along Canoe Lake Road have been very interesting to say the least and some patterns of habitat relation and orientation are beginning to emerge. Other than the usual icterid species (Red-winged Blackbird and Common Grackle), there were no particular species in great supply this morning. A total of fifteen new arrivals were tallied, which included eight newly arrived warbler species. Also new to the scene were singles of Rose-breasted Grosbeak and Eastern Towhee, both common breeders in the region. The next update on spring migration along Canoe Lake Road will be posted on April 30, 2009.

Results (“first of season” species in bold)

Canada Goose    5
Mallard    2
Ruffed Grouse    1
Common Loon    1
Red-shouldered Hawk    1
Mourning Dove    2
Belted Kingfisher    1
Yellow-bellied Sapsucker    4
Downy Woodpecker    1
Northern Flicker    4
Eastern Phoebe    3
Great Crested Flycatcher    2
Warbling Vireo    1

Blue Jay    4
American Crow    7
Black-capped Chickadee    8
Red-breasted Nuthatch    1
House Wren    3
Ruby-crowned Kinglet    3
American Robin    5
Brown Thrasher    2
European Starling    4
Orange-crowned Warbler    1
Yellow Warbler    3
Yellow-rumped Warbler    11
Black-throated Green Warbler    1
Pine Warbler    5
Black-and-white Warbler    2
Ovenbird
2
Common Yellowthroat    1
Eastern Towhee    1
Chipping Sparrow    4
Song Sparrow    3
Dark-eyed Junco    1
White-throated Sparrow    5
Rose-breasted Grosbeak    1
Red-winged Blackbird    26
Eastern Meadowlark    2
Rusty Blackbird    2
Common Grackle    14
Purple Finch    1
Pine Siskin    6
American Goldfinch    3

Spring Species Total=63
Average # Individuals per Census=144.6
Average # Species per Census=30

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