We are currently seeing all of these in the garden. The white-crowned is larger, and is quite impressive.
White-crowned Sparrow
Adult white crowned
Similar to adult White-throated Sparrow
Similar to adult White-throated Sparrow
No yellow lores and no white throat patch
Orange or pink bill
Clear gray cheek, nape, and breast; browner flanks
Bold black and white head stripes with wide white middle stripe
© Linda Williams, Liberty, MO, February 2008
Clear gray cheek, nape, and breast; browner flanks
Bold black and white head stripes with wide white middle stripe
© Linda Williams, Liberty, MO, February 2008
White-throated Sparrow
Adult white-striped
White throat and head stripes
Yellow lores (between bill and eye)
Gray face and unstreaked breast
Streaked brown back, wings, and tail
Gray bill
© Byard Miller, NH, Pittsburg, June 2008
Adult tan-striped
Often-seen alternate form has tan head stripes
Still has white throat and yellow lores
Often shows indistinct dark spot on breast
© Jim Paris, October 2008
Often-seen alternate form has tan head stripes
Still has white throat and yellow lores
Often shows indistinct dark spot on breast
© Jim Paris, October 2008
from: http://www.allaboutbirds.org/guide
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