[EBB Sightings] White-Crowned Sparrows - earlyish

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I'm curious about White-Crowned Sparrow migration. I know they're resident 
along parts of the coast. Just how far inland do you have to go before they 
become migrants (i.e., have some of these "early" white crowns been here 
all along, but inconspicuously).

Tom Condit


Tom Condit
tomcondit at igc.org