Utica using multi-colored lasers to harass roosting crows

A central New York city is going high tech trying to harass thousands of roosting crows.

The Utica Observer-Dispatch reports the city is spending $3,000 to buy a portable device called a Bird Blazer that uses a constantly changing pattern of multi-colored lasers to scare off the birds without hurting them.

It's said to be effective over a 10,000-square-foot area.

Roosting crows have been a noisy, messy nuisance in upstate cities, where officials have resorted to small explosives and other measures to roust them.

A spokesman for the state Department of Environmental Conservation says crows like cities in winter because a "heat bubble" makes them 5 to 10 degrees warmer than the surrounding countryside and it's easier to avoid predators.