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In Kenya there are 13 species of Woodpecker. Most of the woodpeckers are diamorphic, meaning male look different from the female.The Grey Woodpecker is a widespread and frequently common resident breeder in much of Sub-Saharan and equatorial Africa. It is a species associated with forest and bush which nests in a tree hole, laying two to four eggs. Like other woodpeckers, this species has a straight pointed bill, a stiff tail to provide support against tree trunks, and zygodactyl or “yoked" feet, with two toes pointing forward, and two backward. The long tongue can be darted forward to capture insects. This bird is 20cm in length. It is a typical woodpecker shape, and has unmarked green upperparts and a pale grey head and underparts. The rump is red, and there is a small red belly patch. The short tail is blackish. The adult male Grey Woodpecker has a red crown. Females have a plain grey head, lacking the red crown. Young birds are like the female, but the reds are paler, and there may be some flank barring. Like other woodpeckers, this species is an insectivore. It is frequently seen, and regularly taps or drums. The call is a loud and fast peet-peet-peet-peet.
Woodpeckers are known for tapping on tree trunks in order to find insects living in crevices in the bark and to excavate nest cavities. Woodpeckers also have, well, a head for pecking. For one, woodpeckers have tiny brains—just 0.07 ounce. The bigger the brain, the higher the mass and thus the higher the risk of brain injury according to biologist research work, hence the reason why woodpeckers don’t get a headache while pecking.
Source : wikipedia / kenyabirding.me