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Cooper's Hawk

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Scientific name: Accipiter cooperii 
Family name:  Accipitridae

Are they endangered?  No, they are not endangered worldwide. (IUCN Red list:  Least concern)  They are endangered in some areas like the United States (New Jersey).

What are their past/present problems?  In the past farmers shot Cooper’s Hawks because they didn’t want them to eat their chickens.  Pesticides that were used to kill insects and other pests have been a problem for the Cooper’s Hawk too. The Cooper’s Hawks would eat the poisoned animals, causing the female hawks to lay thin-shelled eggs that would break before they hatched. This would mean less Cooper’s Hawks were being born so their numbers went down.  Another reason was that the Cooper’s Hawks lost their habitat when people cut down forests to make way for buildings and roads.

Cooper's Hawk

What do they look like?  They have brown backs, white chests and bellies with brown spots, orange or yellow eyes, and a tail that is brown and white striped. When they are full grown, their color changes to blue-gray on their backs.

How big are they?  They are about 1 ½ feet long.  If their wings were spread out, they would be about 2-3 feet wide.

How many eggs do they lay?  The female lays 4 – 5 greenish white eggs once a year.  They hatch in about 34 days.

How long do the fledglings stay in the nest?  Cooper’s Hawks make their nests out of sticks, twigs, bark, and pine needles.  The nest will be on a limb by the trunk of a pine tree.  Sometimes they build nests in trees with leaves (deciduous).  The young birds (fledglings) stay in the nest for a month.

When do they hunt?  They hunt during the daytime. (diurnal)
What do they eat?  They like to eat chickens, songbirds, and sometimes fish.

Where do they live?  They live in Canada, the United States, Central America, and parts of South America.

What kind of place do they like to live in?  They like to live in any kind of forest.

Interesting fact:
They are sometimes called chicken hawks.

Works Cited:

Accipiter cooperii.  9 Jan. 2008.  <http://www.iucnredlist.org/search/details.php/49402/all>.

Alderfer, Jonathan.  Complete Birds of North America.  Washington, D.C.:  National Geographic, 2006.

Accipiter cooperii.  9 Jan. 2008.  <http://www.iucnredlist.org/search/details.php/49402/all>.

Cooper’s hawk.  5 Oct. 2007. <http://www.peregrinefund.org/Explore_Raptors/hawks/cooperhk.html>.

Cooper’s hawk, Accipiter cooperii.  9 Jan. 2008.  <http://www.state.nj.us/dep/fgw/ensp/pdf/end-thrtened/coopers.pdf>.

Schmoker, Bill.  “Re: Owl pictures (etc.).”  E-mail to Club Web.  2 Nov. 2007. 


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Gross facts
Cooper's Hawks sometimes drown their prey to kill it.


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