Birders know that Cooper's Hawks and Sharp-shinned Hawks look alike. These two species share many of the same field marks, and can often be found in the same habitat, behaving the same way. However, they don't often appear in the exact same place at the same time. That's what makes a series of photos posted earlier this month on the Cornell FeederWatch blog truly remarkable. A staff member observed and photographed a Sharpie mobbing a Cooper's Hawk, and the results were pretty amazing: Sharp-shinned Hawk Versus Cooper’s Hawk. When you've just got one bird to identify, there are few key points to consider when trying to determine whether your bird is a Cooper's Hawk or a Sharp-shinned Hawk.
Size, head shape, and body proportions are among the important attributes to keep in mind in this identification challenge. This cute original design featuring a Birdorable Cooper's Hawk next to a Birdorable Sharp-shinned Hawk points out these tips and more. This new design is available on t-shirts and novelties for your accipter-studying convenience.
Just two more days -- we've almost reached the end of Birdorable Bonanza 2011. Today's new bird species is the Roadside Hawk!
GAVIÃO-CARIJÓ ( Rupornis magnirostris ) by Dario Sanches
The Roadside Hawk is the smallest species of Buteo, a family that also includes Red-tailed Hawks and Broad-winged Hawks. Roadside Hawks are found throughout parts of Central and South America. Despite their urban-sounding name, they are highly adaptive and can be found nesting in a wide variety of habitats.
Tomorrow's bird has a large red crest and lives in North America. Can you guess what it will be?
Today’s bird, and the 9th species in the Birdorable Bonanza, is the Northern Goshawk!
Northern Goshawk by dracobotanicus
Northern Goshawks are large Accipter birds of prey that live across parts of the northern hemisphere. They are secretive birds proficient at hunting and known for their fierce defense of nest and territory. Idaho biologist Rob Miller is studying Northern Goshawks as he persues a masters degree in Raptor Biology. Follow his blog to learn more about this fascinating species. Read his study abstract and then pay attention this coming spring for the new field season to begin!
Tomorrow bird is a goose with pink feet. Can you guess what it will be?
For 19 days we're adding a new Birdorable bird every day as part of our Birdorable Bonanza 2011. We're counting up to revealing our 350th species! Today's bird is the Cinereous Vulture.
Cinereous Vulture from tombothetominator
Cinereous Vultures are huge birds of prey that range through parts of Europe and Asia. They are also known as Black Vultures (no relation to the American Black Vulture) or Monk Vultures. In their south European range, they are in trouble. Poisoning is a major problem facing these and other vulture species, but habitat loss and food scarcity are also detrimental to the survival of the species. Researchers from the Denver Zoo conducted a study which revealed that Cinereous Vultures use a huge range of territory. Birds tagged with wing markers similar to those used on California Condors were found 1200 miles from their point of origin. While the birds were tagged by scientists, follow-up data provided by keen-eyed birdwatchers helped to complete the study, which is on-going.
Tomorrow's bird is an Australian parrot that is named after a number.