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Cuckoo Roller

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The Cuckoo roller or courol (Leptosomus discolor), is the only bird in the family Leptosomidae, which is usually placed in the order Coraciiformes, which also includes the kingfishers, bee-eaters and rollers. However, its position is not very clear. Morphological evidence may suggest a placement in or near to Falconiformes. In the rather comprehensive DNA study by Hackett et al, this and the hoatzin are the only two birds whose position is unclear, although the cuckoo roller seems to be at the root of a group that contains the Trogoniformes, Bucerotiformes, Piciformes, and Coraciiformes.

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LC

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Least Concern

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Cuckoo Roller

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Male

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Leptosomus discolor

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Leptosomus

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Courol

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Leptosomidae

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Leptosomiformes

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n33:abstract

The Cuckoo roller or courol (Leptosomus discolor), is the only bird in the family Leptosomidae, which is usually placed in the order Coraciiformes, which also includes the kingfishers, bee-eaters and rollers. However, its position is not very clear. Morphological evidence may suggest a placement in or near to Falconiformes. In the rather comprehensive DNA study by Hackett et al, this and the hoatzin are the only two birds whose position is unclear, although the cuckoo roller seems to be at the root of a group that contains the Trogoniformes, Bucerotiformes, Piciformes, and Coraciiformes. It is a medium-large bird, inhabiting forests and woodlands in Madagascar and and the Comoro Islands. Three subspecies are described: the nominate Leptosomus discolor discolor is found in Madagascar and Mayotte Island, Leptosomus discolor intermedius on Anjouan, and Leptosomus discolor gracilis of Grand Comoro. Based on its smaller size, differences in the plumage, and minor difference in the voice, the last of these is sometimes considered a separate species, the Comoro cuckoo roller (Leptosomus gracilis).