These birds have earned the unfortunate distinction of a spot on Audubon's list: American Bittern, Black-throated Sparrow
, Boreal Chickadee, Common Grackle, Common Tern, Eastern Meadowlark, Evening Grosbeak, Field Sparrow, Grasshopper Sparrow, Greater Scaup, Horned Lark, Lark Sparrow, Little Blue Heron, Loggerhead Shrike, Northern Bobwhite, Northern Pintail, Ruffed Grouse, Rufous Hummingbird, Snow Bunting and Whip-poor-will.
3) C rufivirgatus Chondestes Lark Sparrow grammacus Amphispiza Black-throated Sparrow
bilineata Cardinalis Northern Cardinal 21 33(4.
Black-throated sparrows (Amphispiza bilineata) breed in arid shrublands that include sagebrush and salt desert shrub communities (Johnson et al.
Five Brewer's sparrows, seven sagebrush sparrows, and three black-throated sparrows were recaptured at their initial capture location in subsequent winters (Table 1).
Basic information about the winter ecology of Brewer's, sagebrush, and black-throated sparrows is lacking.
The Saturday schedule included an early morning hike to a bird grotto where black-throated sparrows
fed from the women's outreached palms.
Cactus, yucca, and agave dapple the surrounding Chihuahuan desert where scaled quail, Say's phoebes, and black-throated sparrows
Sage Sparrows (Amphispiza belli), Black-throated Sparrows (A.
It was unclear whether Black-throated Sparrows are most successful at feeding in their usual habitats because they exhibited small differences in seed intake rates between habitats relative to error [ILLUSTRATION FOR FIGURE 4 OMITTED].
Black-throated Sparrows experienced only small trade-offs in food intake rate between habitats and achieved nearly equal food intake rates on the valley floor and in pinyon-juniper.
accounted for 48% of captures of residents, while white-crowned sparrows, Bewick's wrens, and sage sparrows combined accounted for 84% of captures of short-distance migrants.