Warblers and vireos comprise about half of the songbirds nesting in the national forest. Upon first arrival in late May, the birds rapidly set up territories. Singing male activity is most conspicuous from June 1 to July 4. Most young are fledged by mid-July and the woods then are very quiet in contrast to the territorial songs heard only a few weeks before. Migration really get underway by late July or early August after the birds have molted.
Most birds migrate for the winter due to the lack of food sources and the climatic conditions.
Resident birdlife during the winter is augmented by erratic influxes of species from father north or west. Most species originate in the northern boreal forest-tundra zone, but it is possible that some invasions come from large local populations. A check list of birds of the Superior National Forest can be picked up at the Ely Chamber of Commerce or at the Superior National Forest. Rental equipment is available. Rental equipment is available.