Larry Bird Wallpaper Biography
Many inconspicuous birds exhibit what is known as "countershading"; they are darkest along the back, and gradually become lighter until the belly is pure white. Countershading tends to eliminate a sharply defined shadow, since the bird absorbs the most light above, where the light is brightest, and reflects the most light below, where the light is dimmest. The vast majority of shorebirds are countershaded, although as in the Snowy Plover the division between darker back and lighter belly may be rather sharp.
"Disruptive" coloration -- the use of striking patterns to break up the outline of the bird -- is another technique for avoiding detection. Killdeer and Semipalmated Plovers, for example, are very difficult to see in some circumstances. The extreme in cryptic coloration, of course, is found among those birds that simply take on the color of the background against which they live. Ptarmigans in their pure white winter plumage are the classic example.
Birds often use colors to identify themselves to other members of their flock and thus to hold it together. Examples are the color patterns revealed in flight by shorebirds such as Ruddy Turnstones and Willets. Colors, such as those inside the mouths of gaping chicks, may also function to stimulate parental feeding. Other colors may direct the feeding movements of the young, as does the red spot on the bill of the Herring Gull, which encourages the young to solicit food and to stick its head into the adult's mouth
Many inconspicuous birds exhibit what is known as "countershading"; they are darkest along the back, and gradually become lighter until the belly is pure white. Countershading tends to eliminate a sharply defined shadow, since the bird absorbs the most light above, where the light is brightest, and reflects the most light below, where the light is dimmest. The vast majority of shorebirds are countershaded, although as in the Snowy Plover the division between darker back and lighter belly may be rather sharp.
"Disruptive" coloration -- the use of striking patterns to break up the outline of the bird -- is another technique for avoiding detection. Killdeer and Semipalmated Plovers, for example, are very difficult to see in some circumstances. The extreme in cryptic coloration, of course, is found among those birds that simply take on the color of the background against which they live. Ptarmigans in their pure white winter plumage are the classic example.
Birds often use colors to identify themselves to other members of their flock and thus to hold it together. Examples are the color patterns revealed in flight by shorebirds such as Ruddy Turnstones and Willets. Colors, such as those inside the mouths of gaping chicks, may also function to stimulate parental feeding. Other colors may direct the feeding movements of the young, as does the red spot on the bill of the Herring Gull, which encourages the young to solicit food and to stick its head into the adult's mouth
Larry Bird Wallpaper
Larry Bird Wallpaper
Larry Bird Wallpaper
Larry Bird Wallpaper
Larry Bird Wallpaper
Larry Bird Wallpaper
Larry Bird Wallpaper
Larry Bird Wallpaper
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