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Raso lark
The Raso lark (''Alauda razae'') is a small passerine bird with a highly restricted range, being found only on Raso islet in the Cape Verde Islands. This critically endangered member of the Alaudidae lives in highly arid terrain, and is considered one of the least known birds in the Western Palaearctic region, due to its remoteness and the lack of much ornithological study on the archipelago as a whole.
==Description==
The Raso lark is restricted to one small island in the Cape Verde group, although historically it is believed to have ranged over two other islands, Branco and São Vicente Island; all three of these islands were joined in the last Ice Age. Branco island itself has no permanent water and has never been inhabited by people, a fact that has probably saved the lark from extinction until now.
The Raso lark feeds by digging in the ground for insect larvae, and bulbs of the nutsedge. Both sexes also feed on grass seeds, and insects such as butterflies, moths and grasshoppers. It has an enlarged bill, but it is not used for foraging, but for dominance displays among males.
The female lays one to three eggs after the rains. Courtship behaviour is like that of the skylark. The incubation time is thought to be 15 days.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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