By Wynne Parry, LiveScience Contributor | December 06, 2013 03:57pm ET
The visitors from the Arctic have shown up as far south as North Carolina, on the island of Bermuda and in unusually large numbers in the Northeast and around the Great Lakes. Yesterday (Dec. 5), 15 were counted at Logan Airport in Boston.
For reasons no one understands, snowy owl sightings are spiking in eastern North America this winter.
"Maybe this is starting to shape up to be an irruption year," said Denver Holt, founder of the Owl Research Institute in Montana. 'Irruption' refers to the unpredictable migrations the birds make.