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Article Title

The Natal Pterylosis of Hummingbirds

Volume

77

Issue

1

First Page

14

Last Page

21

Abstract

Of the hummingbirds examined, most have a common pattern of natal down distribution: a single paired row of filamentous mid-dorsal neossoptiles. One exception, Glands hirsuta, typically has 30 short conglomerate downs on eight tracts, including the dorsal cervical region. The taxonomic usefulness of natal pterylosis seems to be at the intrafamilial level in the Apodiformes.