Experience Investigation Species Texas 
10,000 Birds
JUNE 9, 2011
Once considered a separate species, the Mexican Duck was lumped with Mallard in 1983 after studies indicated a high degree of hybridization, and that is where it’s remained ever since. And while we’re at it, what’s your experience with Mexican Ducks and Mallards in Mexico, Arizona, New Mexico, and Texas?
10,000 Birds
APRIL 21, 2011
So defined, bird songs are the sounds, often but not always loud and musical, that (mostly) male birds make as part of that species’ mating system. The bottom two are the songs of individuals raised in isolation, representing only their “built-in&# template unaffected by the experience of hearing normal adults.
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