Gape

In bird anatomy, the gape is the interior of the open mouth of a bird and the gape flange is the region where the two mandibles join together, at the base of the beak. The width of the gape can be factor in the choice of food.

Gapes of juvenile altricial birds are often brightly colored, sometimes with contrasting spots or other patterns, and these are believed to be an indication of their health, fitness and competitive ability. Based on this, the parents decide how to distribute food among the chicks in the nest. Some species especially in the families Viduidae and Estrildidae have bright spots on the gape known as gape tubercles or gape papillae. These nodular spots are conspicuous even in low light. A study examining the nestling gapes of eight passerine species found that the gapes were conspicuous in the ultraviolet spectrum (visible to birds but not to humans). Parents may however not rely solely on the gape coloration, and other factors influencing their decision remain unknown.

Red gape color has been shown in several experiments to induce feeding. An experiment in manipulating brood size and immune system with Barn Swallow nestlings showed the vividness of the gape was positively correlated with T-cell–mediated immunocompetence, and that larger brood size and injection with an antigen led to a less vivid gape. Conversely, the red gape of the Common Cuckoo (Cuculus canorus) did not induce extra feeding in host parents. Some brood parasites such as the Hodgson's Hawk-cuckoo (C. fugax) have colored patches on the wing that mimic the gape color of the parasitized species.

When born, the chick's gape flanges are fleshy. As it grows into a fledgling, the gape flanges remain somewhat swollen and can thus be used to recognize that a particular bird is young. By the time it reaches adulthood, the gape flanges will no longer be visible.

Other articles related to "gape, gapes":

Evil Angel (studio) - Directors and Films - Current Directors
... Latin Coochie, Black Butthole Stretchers, The Ass Spread, Phattys Rhymes Dimes, Gape Man, New Lil' Freaks Get It Poppin, Big Wet Round Bootys, Ill Flows ... The first film he directed for Evil Angel was Gape Lovers 2 in April 2008, and he has also worked on Anal Acrobats, Gape Lovers, Acrobatic Assholes, Pretty Sloppy, Deep Anal Abyss, Anal Buffet, Anal ...
Snake Skeleton - Skull - Joints of The Snake Skull
... It is highly mobile in most directions, allowing a wider gape (i.e ... in the plane of the photograph, and while it does not increase gape, it does facilitate the complex action by which the snake draws prey into its mouth ... It allows the nose to upturn slightly, increasing gape and assisting in swallowing ...
Hodgson's Hawk-Cuckoo
... would reduce the provisioning rate as the foster parents see only one gape ... To counteract this, the Hodgson's Hawk-Cuckoo displays gape-coloured patches of skin under its wing to simulate additional gapes the strategy appears to increase the ... Although the skin patch is not gape-shaped, it is convincing host parents occasionally place food into the patch ...
St Albans (UK Parliament Constituency) - Members of Parliament - MPs 1640–1852
... Arris 1668 Samuel Grimston February 1679 Sir Thomas Pope Blount John Gape August 1679 Samuel Grimston 1685 Captain George Churchill Thomas Docwra 1689 Sir Samuel Grimston January 1701 Joshua Lomax March ...
The Illmoor Chronicles - Books - The Shadewell Shenanigans
... a barbarian, his partner in crime Gordo Goldeaxe, a dwarf, and his half brother Gape, who first appears in this book ... lords of the great cities of Illmoor need to devise a plan to get rid of Groan, Gape and Gordo, but cannot do so openly as the duo are also known and admired for saving the children of Dullitch from the ... Groan and Gape, unable to resist the lure of riches and a beautiful woman, enter the competition ...

Famous quotes containing the word gape:

    To face the garment of rebellion
    With some fine color that may please the eye
    Of fickle changelings and poor discontents.
    Which gape and rub the elbow at the news
    Of hurly-burly innovation.
    William Shakespeare (1564–1616)