1 Most owl experts agree that "irruptions" of great gray owls into the northern Untied States are due to a shortage of prey in Canada.

2 Great gray owls have daytime hunting habits and a subdued nature, making them easier to spot than other owl species.

3 Great grays are the largest owls in North America. They prefer lowland habitat such as tamarack and spruce bogs.

4 Be careful not to disturb the birds as they hunt. If your presence seems to be disturbing an owl, move farther away and observe the bird with binoculars.