Keywords: animal bird outdoor aquatic bird Bill color and curl to tail feathers indicates male. Brown female-like body color in this season and narrow white on rear edge of speculum indicates "Mexican Mallard". But bright yellow bill, more white in outer retrices, and green tones on crown (seen in some light) indicates hybrid with "Northern Mallard. Bill color and curl to tail feathers indicates male. Brown female-like body color in this season and narrow white on rear edge of speculum indicates "Mexican Mallard". But bright yellow bill, more white in outer retrices, and green tones on crown (seen in some light) indicates hybrid with "Northern Mallard. |