
As mentioned in a recent post, this is time of year when woodpeckers are excavating nesting cavities. Once a woodpecker’s young are raised and have fledged, the entire family abandons the cavity, but its usefulness is far from over. As shelters, cavities are prime property for all kinds of animals — they are off the ground and thus easier to defend from predators and they provide protection from the elements.
Because woodpeckers typically excavate a new cavity every year and rarely reuse an old one, many species of birds, mammals, reptiles, amphibians and insects have access to ready-made homes. A multitude of species of wildlife rely on the holes left behind by woodpeckers for nesting, roosting, and shelter. Squirrels, owls, salamanders, wood ducks, bats, nuthatches, grey treefrogs, mergansers – animals incapable of making their own cavities – benefit from the weeks of work that woodpeckers devote to creating them. (Photo: female Pileated Woodpecker removing wood chips during cavity excavation)
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