| Publication Type: | Journal Article |
| Year of Publication: | 1982 |
| Authors: | Butler, RW |
| Journal: | The Wilson Bulletin |
| Volume: | 94 |
| Issue: | 1 |
| Date Published: | 1982 |
| ISBN Number: | 00435643 |
| Keywords: | Hirundinidae, Hirundo, Hirundo pyrrhonota, Hirundo rustica, Petrochelidon pyrrhonota |
| URL: | http://www.jstor.org/stable/4161586 |
| Short Title: | The Wilson Bulletin |
Taxonomic name: