A male Black-throated Blue Warbler in Howard Co., Maryland (8/29/2014). Photo by Bonnie Ott. (MBP list)
A female Black-throated Blue Warbler in Garrett Co., Maryland (8/6/2012). Photo by Frode Jacobsen. (MBP list)
A female Black-throated Blue Warbler in Cecil Co., Maryland (9/23/2014). Photo by Mark Johnson. (MBP list)
A Black-throated Blue Warbler in Garrett Co., Maryland (9/12/2019). Photo by Jim Stasz. (MBP list)
A female Black-throated Blue Warbler in Queen Anne's Co., Maryland (9/29/2017). Photo by Daniel Irons. (MBP list)
A female Black-throated Blue feeding on Devil's Walking-Stick berries in Somerset Co., Maryland (10/10/10). Photo by Bill Hubick. (MBP list) (More of this species)
A female Black-throated Blue Warbler in Cape May Co., New Jersey (10/1/2011). Photo by Mark Johnson. (MBP list)
A Black-throated Blue Warbler in Harford Co., Maryland (10/2/2016). Photo by Matthew Addicks. (MBP list)