へいきょうるい
平胸類
2. RatiteA ratite is any of a diverse group of large, flightless birds of Gondwanan origin, most of them now extinct. Unlike other flightless birds, the ratites have no keel on their sternum—hence the name from the Latin ratis. Without this to anchor their wing muscles, they could not fly even if they were to develop suitable wings. Most parts of the former Gondwana have ratites, or did have until the fairly recent past. Their closest living relatives are the tinamous of South America.
Read “Ratite” on English Wikipedia
Read “平胸類” on Japanese Wikipedia
Read “Ratite” on DBpedia
Read “Ratite” on English Wikipedia
Read “平胸類” on Japanese Wikipedia
Read “Ratite” on DBpedia
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