
Sharp-shinned Hawk (Accipiter striatus)
Cooper's Hawk (Accipiter cooperii)
For the first many years as birdwatcher, my wife and I maintained several birdfeeders on the two countryside properties where we lived, a few kilometres north of Toronto, above Lake Ontario.
We loved feeding the many songbird species that visited our feeders, but were always dismayed when Sharp-shinned Hawks and Cooper's Hawks also visited the feeders to prey upon the smaller birds feeding on the seeds.
I have come to appreciate the two small raptors species for all of their remarkable exploits and appearance.
Both of these Accipiters have huge ranges in Canada, the U.S.A. and even parts of Mexico.
While the Sharp-shinned preys chiefly on small birds at feeders, especially in winter, the Cooper's Hawk also eats songbirds but occasionally adds small mammals to its diet.
Fred J. Alsop III, in his 'Birds of Canada Field Guide', says Sharp-shins declined in the 1950s through the 1970s due to pesticides and heavy metal pollutants in their environment, then made some comeback, but are perhaps declining again. Meanwhile the same writer says that Cooper's Hawks declined in the mid 20th century mainly due to pesticides but are now stable of increasing in most places.
Alsop also states that Cooper's Hawks are are territorial, and will not allow the similar, and ever-so-slightly smaller, Sharp-shinned in the same woodlands.
Because I was so against these two small raptors all those years ago, I never did get any photos of them. That was pity, because they are both very attractive creatures.
Please comment if you wish.
BarrytheBirder