From the Birds of North American Online species account:

"D. d. dominica (Linnaeus, 1766) breeds east of the Appalachian Mtns. from s. New Jersey south to central Florida; winters from s. South Carolina through Florida, Bahama I., and Greater Antilles. Bill long and slender; yellow in eyebrow stripe over lores (very rarely white there); rarely shows a white spot at base of bill on chin.
D. d. albilora Ridgway, 1873, breeds mainly west of the Appalachian Mtns. and in the Mississippi Valley from n. Illinois and West Virginia south to e. Texas and nw. Georgia; also east of the Appalachian Mtns., e.g., in se. Pennsylvania; winters chiefly from lower Rio Grande Valley south through e. Mexico to Costa Rica. This subspecies appears to be expanding its breeding range northward (see Distribution, above). Bill relatively short and stout compared to other subspecies; white in outer tail feathers slightly more extensive than in D. d. dominica; white in eyebrow stripe over lores (rarely yellow there); typically has a small white area separating yellow of throat from base of bill, but may be yellow to base of bill as in typical D. d. dominica."

Mike Burchett
Churchville, MD 21028

  ----- Original Message ----- 
  From: Bob Hartman 
  To:  
  Sent: Thursday, February 23, 2006 3:31 PM
  Subject: Re: [MDOSPREY] Yellow-throated Warbler Again


  Norm, could you or Bob or Matt comment on how this differs from the more 
  likely subspecies here?  The only YTWAs I've seen in MD were in N. 
  Pocomoke Swamp, although I heard one at Little Bennett a couple of years 
  ago.

  Bob Hartman
  Colesville, MD


  Norm Saunders wrote:
  > Both Bob Ringler and Matt Hafner agree that the YTWA visiting our suet feeder since January 7 is likely the "albilora" race, possibly a first state record for that subscpecies.
  > 
  > Fran has pictures she took in January at:
  > 
  > http://home.att.net/~fcsaunders/ytwarb/
  > 
  > and I have some of the photos I took a few days ago, selected to address the issue of whether the bird had white feathering on the "chin", or base of the lower mandible.  These are at:
  > 
  > http://home.att.net/~fcsaunders/ytwarbII/
  > 
  > To pin down the location, the bird has been visiting our suet feed in Bay Vista Estates, situated on a saltwater marsh and tidal gut emptying into Sinepuxent Bay, just south of the northernmost end of Assateague Island, on the mainland, in Worcester County.
  > 
  > Enjoy!
  > Norm Saunders
  > Colesville & West Ocean City, MD
  > 
  > 
  >