Resumen de Pine martens may save UK's red squirrels
The UK'S endangered red squirrels are getting an unexpected helping hand -- from predators that kill the grey squirrels that threaten them. Grey squirrels are native to North America. They got settled in the UK in the 19th century after being brought over by a silk manufacturer, and soon began to suppress the native red squirrels. They are bigger, bolder and eat a more varied diet and also carry a virus deadly to red squirrels. Today, they have driven red squirrels out of much of the UK -- although in Europe the red squirrels remain widespread. Emma Sheehy at the University of Aberdeen, UK, and her colleagues studied the populations of all three animals in Scotland during 2016. They enticed pine martens and squirrels to feeders and recorded their numbers, using DNA analysis and cameras
