Quick post......sorry.

Snowy Owl et al - Cyclic food crash.

See excerpt from " The Birder's Handbook" by Ehrlich, Dobkin and Wheye
(if still available, a good book to have in one's home library) 

The drought in the West, SW affecting food sources therefore
probable contributing to vagrants.

Hope this helps.
Others will probably add to it.

Charlene Malone
St. L co.

The Audubon Society of Missouri's Wild Bird Discussion Forum
Questions or comments? Email the list owners:
mailto:[log in to unmask]