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Sunday, April 15, 2007

Your Feathered Jewel Might be a Hawk's Next Meal

For the better part of our country’s history, raptors were considered “vermin,” rapacious creatures to be shot on sight. Many States maintained bounties on raptors well into the 20th century. In the enlightened dawn of conservation in the early 1900s, learned individuals such as conservationist William T. Hornaday began preaching the concept of “good” hawks and “bad” hawks. In simple terms, buteos were judged to be “good” and accipiters “bad.” Even such notable contemporary artists, educators, and ornithologists as Louis Agassiz Fuertes*, Mabel Osgood Wright, and George Miksch Sutton railed against the dastardly habits of the bird-eating hawks. It may come as a shock to some that not until 1972 did all of the raptors (hawks and owls) receive full Federal protection under the Migratory Bird Treaty Act.

This Cooper's Hawk has just devoured a Rock Pigeon. Photographed by Phil Eager, as originally posted to flickr.com.
Bildstein (2001) has written this interesting history (.pdf) of changing attitudes toward raptors. As he notes, the accipiters still have their detractors, and they come from a most unexpected quarter:
. . . many birdwatchers, especially those maintaining backyard birdfeeders, continue to call Hawk Mountain Sanctuary to express outrage at the seemingly persistent predatory activities of sharp-shinned and Cooper’s hawks at their bird feeders. Both species of accipiters appear to be increasingly willing to enter human-dominated landscapes; most likely in response to reduced human-caused mortality there. Although most callers seem resigned to this situation, particularly once they have been informed that removing a single raptor from a backyard is likely to be as ineffective as removing a single gray squirrel (Sciurus carolinensis), others appear determined to “do something themselves” about the situation, including, a few have suggested, shooting the hawk (Bildstein, personal observation).
Such attitudes suggest that we still have a long ways to go in teaching basic principles of ecology and natural history to the general public. Seeing a hawk swoop in and grab a cardinal or goldfinch may be disturbing to the unitiated, but it's nature at its finest. Instead of bemoaning the loss of a favorite songbird, birdwatchers should rejoice at the chance to witness one of natures finest avian hunters in action. Those who persist in feeding the birds, should be prepared to offer up an occasional sacrifice to the hawks. They also have to eat.

Citation: Bildstein, Keith L. 2001. Raptors as vermin: a history of human attitudes towards Pennsylvania’s birds of prey. Endangered Species UPDATE 18: 124-128.

*A lengthy memorium written by Frank Chapman in honor of Louis Agassiz Fuertes can be read at the link below (HINT: to ensure that this lengthy .pdf document doesn't crash your computer follow these simple steps: right-click on the link, left-click "Save Target As...," left-click "Save," and left-click "Open"): Fuertes memorium.

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