Broad-winged Hawk whistle (Apr, NJ).
Red-shouldered Hawk (July, NJ).
Red-tailed Hawk (Nov, PA)
An adult Red-tailed Hawk flew into an oak uttering a squealing call, and then abruptly left the tree when a second adult arrived, at which point these raspy notes were heard (Oct, PA).
Sharp-shinned Hawk calls at 2, 29, 50 and 62s (including mobbing calls by Blue Jays, Oct, NJ)
Cooper's Hawk (Nov, PA)
Cooper's Hawk leaving nest (June, NJ).
Cooper's Hawk, female call after flying from nest to perch nearby (June, NJ).
Same call by first year bird (Nov, NJ).
The mew calls sound similar to Yellow-bellied Sapsucker (Oct, PA).
Calls between two interacting immature Cooper's Hawks (Sep, PA).
calls spliced together
Peregrine Falcon in flight (Oct, NJ).
American Kestrel in flight (male, Oct, PA).
This soft call was heard when two female/immature Merlins interacted with each other in flight (Nov, NJ).
Osprey (Aug, NJ).
Adult calling near nest (July, NJ)
There was a raspy alarm at the end of some call sequences (July, NJ).
Northern Harrier pair flying overhead in breeding habitat, the louder call being the female, and the whistle presumed to be the male (Red-winged Blackbird also calling, May, PA).
A male Northern Harrier being mobbed in flight by a Red-winged Blackbird was presumed to make this soft call (at 3s) (breeding grounds, May, PA).
(insect noise at 5-6kHz)
Northern Harrier in flight (Nov, NJ)