facebook
twitter
rss
account
search
search
 

Bird decline not caused by gray squirrels

Jan. 8, 2010 at 2:49 PM   |   Comments

LONDON, Jan. 8 (UPI) -- Invasive gray squirrels are not responsible for the 40-year decline of some bird populations in Britain, orthinologists said.

The report from the British Trust for Ornithology contradicts the widely held view that gray squirrels have significantly depleted some woodland bird species because they eat eggs and kill and eat baby birds.

Researchers studied the gray squirrel's impact on 38 bird species throughout Britain and found the squirrels suppressed bird populations in some local areas, but did not cause widespread harm or lasting damage.

Blackbirds and collared doves were found to have thrived despite nest attacks from invasive gray squirrels and native red squirrels, the researchers said in a recent issue of the Journal of Ornithology.

Britain has more than 2 million gray squirrels and about 160,000 red squirrels. Gray squirrels have proven harmful to red squirrel populations because the grays spread a form of pustular dermatitis that does not affect grays, but can kill red squirrels within a week of infection, the BBC reported Friday.

© 2010 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Most Popular
1
Scottish fish were the first to have sex and they did it sideways, study finds Scottish fish were the first to have sex and they did it sideways, study finds
2
First white rhino born in captivity dies in Kenyan conservancy First white rhino born in captivity dies in Kenyan conservancy
3
Sean Parker to atone for wedding's Big Sur damage with app Sean Parker to atone for wedding's Big Sur damage with app
4
Internet trolls in Britain could face serious jail time Internet trolls in Britain could face serious jail time
5
Protestors object plans to build telescope on land sacred to native Hawaiians Protestors object plans to build telescope on land sacred to native Hawaiians
Trending News
Around the Web
x
Feedback