This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
animal bird Bill color and curl to tail feathers indicates male. Brown femalelike body color in this season and narrow white on rear edge of speculum indicates ampquotMexican Mallardampquot. But bright yellow bill more white in outer retrices and green tones on crown seen in some light indicates hybrid with ampquotNorthern Mallard.