Snags provide "hawking" perches for flycatchers and resting perches for swallows. Flycatchers perch on a branch, fly out to snatch insects, and then return to the same branch to watch for other insects. Large natural cavities, formed in snags by decay, often provide homes for a variey of mammals including marten, porcupine, bats, bushy_tailed woodrats, northern flying squirrels, and other species. When left to decay and fall over naturally, large hollow snags may provide den sites for larger animals like mink, lynx, red fox, and wolverine. To help provide homes for this wide variety of animals, leave dead trees standing whenever possible, particularly snags larger than 6 inches in diameter and/or any containing woodpecker holes or other cavities.
Seed_eating birds that can be attracted to feeders include pine siskins, sparrows, grosbeaks, redpolls, and crossbills. These species also eat suet, but seeds will attract them to your feeder. Unsalted sunflower seeds, thistle seeds, raw crushed peanuts, millet, scratch feed, various wild grains, and canary seeds are welcomed. Commercial wild bird seed mixes can be used, but they often contain filler seeds that are not eaten by many species. Often, you can mix your own "wild bird food" more economically. Seeds can be purchased from local feed, variety, and pet stores, or ordered from catalogs. When you first start your feeder, experiment with various seeds and find out which are preferred by the birds in your area.