Having found the Eurasian Green-winged Teal, I then returned home to record notes and learn a bit more about the bird. That's when I apparently walked into a taxonomic morass.
If I have sorted things out correctly, here in NA the bird I saw is a Green-winged Teal (anas crecca)
Some of what I turned up suggests a little more precision, to wit: the bird I saw was a Green-winged Teal (anas crecca crecca) i.e., the Eurasian sub-species as opposed to the birds it was hanging out with which are Green-winged Teal ((anas crecca carolinensis) i.e., the North America, or following the Latin, the Carolina sub-species.
But then it seems that the Europeans take a different view, and that there were really TWO species, the split having come somewhere around 2005:
Eurasian Teal (anas crecca) - (their's - one of which was at Herrick's)
Green-winged Teal (anas carolinensis) (our's - which was also at Herrick's in much greater numbers)
So what's going on? If I were a birder from Great Britain or the Netherlands, would I have two species on my list, but because I'm from this side of the puddle, I only have one species?
Does the AOU have more wisdom than the rest of the world? Have they been infiltrated by a bunch of Bush appointees who have their science revealed from on high? Is this "due deliberation," or "doo-doo deliberation" - and on which side of the puddle does which description apply?
This forum often produces some interesting discussion - which is what I'm asking for, while having fun asking. I hope a few people more knowledgeable than I in taxonomy, and taxonomic decision, might weigh in.
South Newfane, VT
Tails of Birding - www.tailsofbirding.net