Monday, August 3, 2015

Red-shouldered Hawk

Overall, during our 25 March visit to the National Audubon Society’s Corkscrew Swamp Sanctuary, we saw fewer birds than on our previous visits. Perhaps the time of year was poor, and, at the time, the swamp was suffering from drought. We were, delighted, to find the south Florida race of Red-shouldered Hawks, to be common as always. Buteo lineatus eximus breeds in the southern half of Florida. It is relatively small and has a pale gray or whitish head
Red-shouldered Hawks in Minnesota and most of the eastern United States are much larger and darker. They are named Buteo lineatus lineatus. Most of the information I am relating in this post is from Dykstra et al. (2008).
Buteo lineatis alleni breeds from North Carolina, Tennesee, Arkansas, and Oklahoma south to Lousiana, Texas, and the northern half of Florida. These birds are slightly smaller and paler than Minnesota hawks, and lack dark streaks on their underparts.

Curiously, Red-shouldered Hawks also breed in California, Oregon, Baja California and Arizona. Their range is not contiguous with eastern Red-shouldered hawks. They are relatively small and have bright rufous underparts.  These hawks are named Buteo lineatus elegans.

1 comment:

  1. just saw a red-shouldered hawk today in Parthenon, Arkansas - beautiful bird - 11/2/2016