Stages of earthworm invasion

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Re: Stages of earthworm invasion

Post by Joe » Wed Mar 02, 2016 9:23 am

Perhaps the new abundance of worms hasn't yet been met by an abundance of predators? I would think birds, snakes, some rodents would enjoy eating those worms. To some extent that must be already happening but perhaps it will increase to keep the worm populations in check?

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Re: Stages of earthworm invasion

Post by wisconsitom » Fri Mar 04, 2016 10:49 am

Right^. So, speaking of birds, the native American robin feeds preferentially on earthworms. Haven't we all seen that-the bird's head cocked to the side "listening" (I guess) for the worms' presence below. So I ask, what would these birds have eaten in milenia past if earthworms were not present here? I'm still just not getting this. These birds eat worm after worm. They are clearly adapted for making the greatest use of this food source. Are we to believe then that this is a relatively recent phenomenon? I've never once read anything about that-that robins have adjusted their food gathering as a response to this invasion.

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Re: Stages of earthworm invasion

Post by Lucas » Fri Mar 04, 2016 2:02 pm

"According to David MacDonald, the foremost fox biologist in the world and the author of the excellent book "Running with the Foxes," earthworms comprise 20 to 35 percent of fox diet "

Everything eats worms from foxes to woodcock but worms hold their own. ... rms#p33382
We travel the Milky way together, trees and men. - John Muir

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