Variations in Rough-legged Hawks

Rough-legged Hawk by Lisa Densmore

Location: Lima, Montana

If you’re wondering where Lima (pronounced LI-ma, like the bean), Montana is, you are not geographically challenged. With due respect to the residents of this small ranching community in the southwestern part of the Treasure State, the only reason Lima entered my life was because we passed through it on the way home after a weekend in Idaho. I’m not apt to forget it. It took a long time to travel through Lima, not due to traffic – we might have seen two cars in two hours on the open road on which we traveled – but because we saw so many Rough-legged Hawks (Buteo lagopus).

Rough-legged Hawk by Lisa Densmore

They perched everywhere, on the irrigation pipes, on the tops of electrical poles, on fence posts… In this hawk-rich environment, I gained a new appreciation for this rodent-eating raptor, which is on the large side for a buteos, averaging 19 to 24 inches tall. With so many of the species in one place, I realized how much variation there could be from one to another. The typical Rough-legged Hawk has a dark belly, though it may be blotchy. A black patch normally shades the carpal joint where the wing bends, but not always or it might be very small. The wings have lots of white on the underside, and its white tail has a black band near its end, but the black morph has a mostly dark tail. ID-ing a Rough-legged Hawk can be challenging if you don’t already know the bird. It’s more diverse than Grand Central Station during rush hour. Fortunately, it lives in a less populated environment than mid-town Manhattan, making it easy to spot.

I enjoyed seeing its color variations. The phenomenon is not unique to Rough-legged Hawks. While each avian on my AudubonGuides.com app has a common look, variations occur. Have you seen birds-of-a-color that really are not?

Lisa Densmore

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3 Responses to “Variations in Rough-legged Hawks”

  1. Josh Haas says:

    The second image here is most excellent!! One of my favorite raptors. Great blog!

  2. Don L. Watson says:

    Great pictures! Wish there were more illustrating the color variations.

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