HI:
Below are two rumored splits from BIRDWATCH magazine (British):

he BOU taxonomic subcommittee will be announcing the split of Common and
Velvet Scoter to give species status to Black Scoter M americana and
White-winged Scoter M d deglandi and M d stejnegeri.

The Savannah Sparrow split news comes from Condor 107:21-28 which says
that
Baja California, San Diego and Sonora coastal populations should be a full
species P rostratus.

Does anyone have references on how to id these taxa?

--
Ian Paulsen
Bainbridge Island, WA, USA
A.K.A.: "Birdbooker"
"Rallidae all the way!"