Natal plumages and downy pteryloses of passerine birds of North America /
"Natal-down pterylae consist of definitely arranged rows of neossoptiles superimposed on certain presumptive contour-feather pterylae. Neossoptiles are essentially only modified downy tips of certain teleoptile feathers; thus the natal plumage is only a transitory phase of the juvenile plumage....
| Main Author: | |
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| Format: | Thesis Book |
| Language: | English |
| Published: |
New York :
[American Museum of Natural History],
1957
New York [American Museum of Natural History] 1957 |
| Series: | Bulletin of the American Museum of Natural History,
v. 113, article 5 Bulletin of the American Museum of Natural History v. 113, article 5 |
| Subjects: |