How can we tell this is a male Hairy Woodpecker and not a male Downy Woodpector? We can tell from the fact, that you can see in the photo that the red patch on the rear of its head is split in two. According to an article in the Feb. 13, 2015 issue of Audubon Magazine entitled "How to Tell a Hairy Woodpecker From a Downy Woodpecker" by Karl Mechem "the male Hairy's red patch is often split, while the Downy's is not".
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