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Archive for the 'Migration' Category

Light pollution is a killer for migratory birds

I just received my latest copy of the “Bird Conservation Tip Sheet” from the American Bird Conservancy (ABC) and there’s a very interesting piece in it about the harmful effects of light pollution on migratory birds. Check this out — I think you’re going to be very surprised.

States & communities tackle light pollution harmful to migratory birds:
Communities are starting to attack the problem of light pollution (, which is harmful to migratory birds, through voluntary programs and also through legislation.
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Posted on Monday, October 19th, 2009
Under: Birds, Migration | No Comments »

Painted Lady butterfly migration: Seeing lots of butterflies? They’re BACK!

Painted lady butterfly. Photo by Joe Oliver, Walnut Creek, Calif.
painted lady3

The Painted Lady butterflies (Vanessa cardui) are back migrating through California even as we speak.

Dr. Art Shapiro is a professor of Evolution and Ecology at UC-Davis and a top butterfly expert. You can find out more than you ever wanted to know about these beautiful Painted Ladies and their migration by checking out Art Shapiro’s Butterfly Site:

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Posted on Monday, March 30th, 2009
Under: Butterflies, Migration, Painted Lady butterfly | 65 Comments »

OK to feed hummingbirds in fall — they’ll migrate if they want to


Hummingbirds will migrate when they feel the urge, whether you’re feeding them or not.

I’ve received a few e-mails lately from readers who are concerned that if they keep filling their hummingbird feeders, it will prevent those tiny flying flowers from taking off on their winter migration. That’s not true. Birds will migrate if and when they want to.
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Posted on Wednesday, October 8th, 2008
Under: hummingbirds, Migration | No Comments »