Скачать или смотреть smart crows tearing up a lawn looking for chafer beetle grubs in British Columbia invasive species

A recording I made of these crows enthusiastically digging up a lawn in British Columbia. They are after invasive European chafer beetle grubs. More info in the article which I have quoted some of below -
http://www.canada.com/vancouversun/co...

"Does your lawn look as if someone just ran over it with a rototiller? Is the grass all churned up and turning yellow as it dies from having had its roots ripped from the ground?

In other words, is your lawn a total mess?

Well, you probably know by now that these are all classic signs of an infestation of European chafer beetles.

Thousands of lawns throughout the Lower Mainland have been destroyed, or are about to be destroyed this month, as crows, raccoons and skunks tear up turf in an excited search for tasty chafer grubs.

The crows and raccoons are actually doing a very good job of pest control. They are nature's environmentally correct agents, digging and eating the juicy grubs before they have a chance to turn into a mature beetle that flies off to reproduce and perpetuate the cycle of destruction.

Unfortunately, in the process, the chafers are also killing lawns and leaving them looking as if they've been over-enthusiastically power-raked or rototilled."