Niagara Gazette

Local News

December 5, 2013

Unusual number of Arctic snowy owls seen in US

Niagara Gazette — ALBANY — Snow-white owls with luminous yellow eyes are thrilling bird-watchers as the magnificent birds set up winter residence at airports, fields and beaches far south of their normal Arctic range.

Snowy owls, familiar to children as Harry Potter's pet, made a noticeable appearance in the northern half of the U.S. in 2011. Bird-watchers recently report on eBird.org snowy owl sightings in dozens of locations across the Midwest, Northeast and Mid-Atlantic states as far south as Cape Hatteras, N.C.

The owls live in the Arctic, but when their population spikes or lemmings are scarce, young ones fly south.

"Snowy owl populations are synchronized with their food source, lemmings," wildlife photographer Lillian Stokes, who co-authors the Stokes bird guides, said Thursday. "If the lemming population crashes, the owls have to go south in search of food."

A few snowy owls are seen in the U.S. every year, Stokes said. "But this year is phenomenal. People believe this could be historic numbers."

It's too early to say how large this year's snowy owl invasion will be, said Denver Holt, a researcher in Charlo, Mont., who has been studying the owls in Alaska for 22 years. "In 2011, it was enormous, nationwide, with sightings in 35 states," Holt said.

The Cornell Lab of Ornithology website says that winter irruptions, or large numbers appearing outside their normal range, occur in snowy owls about every four years. During irruptive years, snowy owls may winter as far south as California, Texas and Florida.

They're easy to see because they're big and white, are active during the day, and hang out in flat, open areas such as airports, farm fields and coastal dunes and marshes, where they hunt for mice, rabbits, waterfowl and other prey.

Jessie Barrie, a scientist at the Cornell lab in Ithaca, agrees it's too early to say how this year's irruption compares to the one in 2011.

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