Thanks for your input! I guess that's half the problem, not knowing their history. :P The males so far show no other variation that this gray head and white bodies. Of course, I'm basing the idea that they're male on the fact that their beaks are yellow compared to their female mallard sisters...
I'm a new user here but a long time bird watcher. I live on a creek that empties into a lake at a local park in Edison, NJ. The last 5 years or so, the mallards here have been giving birth to males that are gray and white where they should be green and dark. The females sometimes turn out a pale...
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