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helmetshrike
The Prionopidae are a family uniting some smallish to mid-sized songbird species. One group, the helmetshrikes, were included with the true shrikes in the family Laniidae, later on split between several presumably closely related groups such as bushshrikes (Malaconotidae) and cuckooshrikes (Campephagidae), but are now considered sufficiently distinctive to be separated from that group as the family Prionopidae. The Prionopidae and the two former are part of a group which is generally rather homogenous but also includes the diverse vangas. The Campephagidae are a bit more distinct.
==Description and ecology==
This is an African and south Asian group of species which are found in scrub or open woodland. They are similar in feeding habits to shrikes, hunting insects and other small prey from a perch on a bush or tree.
Although similar in build to the shrikes, these tend to be colourful species with the distinctive crests or other head ornaments, such as wattles, from which they get their name.
Helmetshrikes are noisy and sociable birds, some of which breed in loose colonies. They lay 2-4 eggs in neat, well-hidden nests.
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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