Woodpeckers help control
 insect populations and create nest cavities that are used by other 
birds and mammals who cannot excavate the cavities themselves. 
Nuthatches, screech owls, kestrels, starlings, squirrels, flying 
squirrels, deer mice, and raccoons all use woodpecker tree cavities.
Woodpeckers are well adapted 
to maneuvering around tree trunks searching for insects and spiders. 
Their toes—two facing forward, two facing backward—enable woodpeckers to
 grasp vertical tree trunks and their stiff tail feathers provide an 
extra measure of support. With their sturdy beaks, woodpeckers can bore 
holes into trees for feeding and chisel out cavities for nesting. Strong
 muscles at the base of the beak act as shock absorbers to absorb the 
pressure from the force of impact. Bristles lining their nostrils filter
 out dust and tiny wood chips. To extract insects from crevices and 
holes in trees, woodpeckers have a long, sticky tongue with a barbed end
 with which they can snag insects. Some woodpeckers prefer dead 
trees in which to excavate a nest while others choose live trees. Some 
species will re-use a nest cavity from year to year while others prefer 
to create a new one. Red-headed woodpeckers will use an existing cavity,
 not necessarily of their own making.
Habitat loss poses the 
greatest threat to woodpeckers. Developers 
often cull dead trees from wood lots leaving the red-headed woodpecker without the dead and decaying 
trees they need to nest and raise their young. In addition, developed 
areas often encourage the presence of starlings, non-native birds that 
invariably out-compete and displace woodpeckers for nesting sites.
    Red-headed Woodpecker has some predators, such as  raptors (hawks, 
falcons, owls), and red-foxes. Eggs and chicks are taken by  snakes, 
raccoons and flying squirrels.      
Red-headed Woodpecker feeds in open areas. It needs  snags for nesting, 
roosting and foraging. It can be found in open deciduous  woodlands, 
orchards, parks, agricultural areas, grasslands, forest edges,  burned 
forests. 
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