birdsandbats 18 Apr 2019 @ThylacineAlive Here are the differences, according to my field guide: American Crows are a bit larger. This can only be used when both species are present. Fish Crows' bills are slightly more slender (slenderer?) Fish Crows often perch on wires, American almost never do. Fish and American have different caws. Note that a fledgling American Crow begging is almost identical to a Fish Crow. See this for further reading: Fish Crow ID
@ThylacineAlive Here are the differences, according to my field guide: American Crows are a bit larger. This can only be used when both species are present. Fish Crows' bills are slightly more slender (slenderer?) Fish Crows often perch on wires, American almost never do. Fish and American have different caws. Note that a fledgling American Crow begging is almost identical to a Fish Crow. See this for further reading: Fish Crow ID
Ituri 18 Apr 2019 Overall the differences in their voice is the best way to identify them in the field.
Great Argus 19 Apr 2019 "Fish Crows often perch on wires, American almost never do." I'd be interested to see the studies for that.
"Fish Crows often perch on wires, American almost never do." I'd be interested to see the studies for that.
