flicker: see woodpecker woodpecker, common name for members of the Picidae, a large family of climbing birds found in most parts of the world. Woodpeckers typically have sharp, chisellike bills for pecking holes in tree trunks, and long, barbed, extensible tongues with which they impale
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Any of six species of New World woodpeckers (genus Colaptes) noted for spending much time on the ground eating ants. The sticky saliva of the flicker is alkaline, perhaps to counteract the formic acid that ants secrete. Its bill is more slender than that of most woodpeckers and is slightly down-curved. Most flickers have a white rump, black breast band, and varied head markings, and most are about 13 in. (33 cm) long.
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flicker
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Yellow-shafted flicker (Colaptes auratus)
(credit: B.M. Shaub)
flicker
An irregular sequence of frames in a movie or video image. The first flicker effect came from movie projectors that were out of synchronization with the film frames. See judder, interlace and flicker fusion rate.
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Television a visual sensation, often seen in a television image, produced by periodic fluctuations in the brightness of light at a frequency below that covered by the persistence of vision
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any North American woodpecker of the genus Colaptes, esp C. auratus (yellow-shafted flicker), which has a yellow undersurface to the wings and tail
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