An Undescribed Form of the Black Duck (Anas obscura)
| Image |  |
|---|---|
| Description | scholarly article published in The Auk, April 1902 |
| Author/s |
author: William Brewster |
| Publication date | April 1902 |
| Language | |
| Country of origin | |
| Wikipedia link | |
| Copyright status |
public domain in United States. |
| Missing/wrong data? | Edit Wikidata item |