mete_caro_051_mallard_usfws_l.jpeg
By Environmental Health Program
2013 (approx.)
![Mallard duck with it's wings outstretched shortly](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/mete_caro_051_mallard_usfws_l.jpeg?itok=X8sbIKXD)
Detailed Description
A mallard in flight. Mallards are a principal host of avian influenza viruses in nature.
Sources/Usage
Public Domain.