Secondary cavity users include saw-whet owls, barred owls and kestrels. Common goldeneyes, wood ducks and other duck species are members of this group. Many songbirds, including eastern bluebirds, great-crested flycatchers and white-breasted nuthatches are secondary cavity users.
As illustrated by the photos I took along the Wolf Creek Nature Trial, not all cavities are the same. The size, shape and location of cavities determine how wildlife species use them. You can tell by looking at the photos the cavities that are used as nests or dens, for escape or roosting cavities, or for feeding. In Photo #4 below, the hallow fallen trunks contained eaten acorns and other seeds. A Cottontail Rabbit scurried out from underneath the pile shortly after I took this picture. Look at the third standing tree from the left, by the Sandusky River bank. See what's peeking at me from behind it? The neck of a Canada Goose! It paddled out into the river when it sensed I recognized it.
Photo #4: Wolf Creek Nature Trail along Sandusky River
Robert Morton, M.Ed., Ed.S. writes about the natural world and promotes converting America's 25,000,000 lawns into wildlife-friendly spaces...one lawn at a time! Do you have a Website, WebBlog, personal story or project, photos or articles to share on this site about how you created or protected a wildlife-friendly space? Please contact us at the secure Bpath Mail Form. We'd enjoy hearing from you!