The Hairy Woodpecker is the Downy's big sibling — the same crisp black-and-white pattern and red male nape spot scaled up to robin size, with a long, heavy chisel of a bill. The two species are so alike that separating them is a rite of passage for new Michigan birders, yet they're not each other's closest relatives; the resemblance appears to be evolutionary mimicry.
Hairies favor bigger timber than Downies — mature woodlots, forest interiors, and burned or beetle-killed stands where they chisel deep for wood-boring larvae. They're year-round residents statewide and less common at feeders than Downies, though suet reliably tempts them.
Wood-boring beetle larvae are the specialty, excavated with heavy blows from trunks and large limbs; ants, caterpillars, and some seeds and sap round it out. At feeders they come mainly for suet.
If it's noticeably bigger than a chickadee-sized woodpecker and its bill looks nearly as long as its head is deep, yes. The Downy's bill is a stub by comparison — bill length is the single best mark.
It appears to be a case of plumage mimicry — research suggests the smaller Downy benefits from resembling the more dominant Hairy. They're not particularly close relatives despite the matching outfits.
Mature forest with big trees and standing dead wood. They're statewide year-round, but a walk in older timber — or any recently burned or storm-damaged stand — raises the odds well above a backyard sighting.
They are. Numbers stay fairly steady from month to month, and the birds do not leave the state, though individuals shift around locally between nesting cover, woodlots, and feeders as food supplies change.
Juveniles have a red or yellowish wash on the crown instead of the adult male's rear-of-head red patch, and their bills are noticeably shorter than an adult's until fully grown. Bill length is the main mark separating the species from Downy, so young birds are the trickiest.
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