It is the only woodpecker species native to both North and South America. This smattering of red-tipped feathers is always shown by Acorn Woodpeckers from Oaxaca, Mexico to Panama Koenig et al. However, the facial circle of this bird is mostly white, with yellow restricted to the throat. Like all Acorns other than those in B. All other populations of Acorn Woodpeckers in the U. There are also subtle differences in the width of the facial circle. This male, photographed near Grants Pass, Oregon on 13 January , is typical of the Acorn Woodpeckers subspecies bairdi found in California, Oregon, and Washington, and matches depictions of this species found in the popular North American field guides. The dark eye red iris seen on the bird on the left is unique to the B. Northern birds show far fewer white-tipped feathers in the breast band, giving their breast bands the appearance of being broader and more solid black.
It is the only woodpecker species native to both North and South America. Like all Acorns other than those in B. Again, only the B. Affluent nations tend to do a good job of preserving their wildlife despite high human population densities. Here in Oregon we presume that three of the four Orange-crowned subspecies either breed in, or migrate through the state. My post-trip research and quest to find comparison photos answered a few questions, but most importantly raised several new ones. The underparts are more streaked than birds in the U. Note that this individual shows a few red-tipped feathers at the base of the throat, where the yellow on the throat meets the top of the black breast band. I love the species Latin species name — fumigatus. Stanback and Ronald L. The primary difference between males and females is the head pattern. However, among all the disjunct populations of Acorn Woodpeckers, only the birds of Baja California Sur lack the conspicuous white eye. Dave Irons February 21, But Hairy Woodpecker is also found on both continents, no? These close-ups were cropped from the two photos above. I took several images of the San Antonio de la Sierra bird shown in the images above, and found only one angle where the bird appears to show a single red-tipped breast feather. The most obvious difference between these birds is eye color. Its features are somewhat intermediate between the B. This species has one of the most elongated latitudinal ranges of any woodpecker in the Americas, extending north to south-central Washington state and south to the Andes Mountains of Colombia. Only the very middle of the belly lacked streaking. The Netherlands for instance. Photograph was by Bill Tice using an Olympus D camera through a Zeiss Diascope 65T Paying attention to geographical differences in common species is a great way to maintain interest in species of birds that are otherwise ignored during a typical day of birding. These hill people hunt every day of the year and every hour of the day. The King was sponsoring opium crop replacements. The underside of this bird exhibits the following features:
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