| Publication Type: | Journal Article |
| Year of Publication: | 1988 |
| Authors: | Willis, EO |
| Journal: | The Wilson Bulletin |
| Volume: | 100 |
| Issue: | 4 |
| Date Published: | 1988 |
| ISBN Number: | 00435643 |
| Keywords: | Accipitridae, Leucopternis, Leucopternis albicollis, Pseudastur, Pseudastur albicollis, Spizaetus, Spizaetus melanoleucus, Spizastur, Spizastur melanoleucus |
| URL: | http://www.jstor.org/stable/4162659 |
| Short Title: | The Wilson Bulletin |
Taxonomic name: