They are indeed excellent photos of a Sharp-shinned Hawk! The heavier streaking down the belly and square tail with a notch in the center make me believe he’s a sharpie.
Sharp-shinned (Accipiter striatus) and Cooper’s (Accipiter cooperii) hawks can be hard to ID. The birds have a lot of variation in plumage and size and there is no single field mark that distinguishes one species from the other.
Sharp-shinned Hawks average 10-14" long. Females are
larger and can appear nearly as large as a male Cooper's Hawk. Where Cooper's
Hawks average 14-20" long and males are smaller and can appear nearly as
small as a female Sharp-shinned Hawk.
The following are ID tips from Project Feeder Watch
for the Sharp-shinned Hawk and Cooper's Hawk:
1) The tail feathers of Sharp-shinned Hawks appear squared
with a notch in the center, whereas a Cooper's Hawks tail looks rounded.
2) Cooper's Hawks have a barrel shaped chest. Sharp-shinned
Hawks are widest at the shoulder and get distinctly narrower down to the hips.
3) A Sharp-shinned Hawk's head looks small compared to the
body, and a Cooper's Hawk's head looks large.
4) Cooper's Hawks are usually larger than Sharp-shinned
Hawks.
5) A juvenile Sharp-shinned Hawk has very thick, rufous
stripes that extend down the lower belly while the Cooper's Hawk has very thin,
dark vertical streaks that fade away on the lower belly.
6) Sharp-shinned have very thin toes and legs, compared to
the Cooper's Hawk.
7) The color of the nape of an adult Cooper's Hawks is pale
with a clear contrast to a dark cap. Juveniles of both species can show a pale
nape, however.
More identification tips and challenges can be seen on
Project Feeder Watch's Accipiter Photo Gallery page: http://www.birds.cornell.edu/
Related Articles:
- Participate in the Great Backyard Bird Count http://goo.gl/Zv5Gw
- Coopers's Hawk http://bit.ly/ylsupp
- Hawks at Feeders http://bit.ly/zfOiVV
- Sharp-shinned Hawks http://bit.ly/zhi4Ng
- Submit a Photo to the Blog http://bit.ly/zMigcu
Great photos! What a beauty he is!
ReplyDelete