Carl Engstrom:
Fox Sparrow (Red)
Carl Engstrom:
Song Sparrow
Carl Engstrom:
Song Sparrow
Carl Engstrom:
Fox Sparrow (Red) & White-throated Sparrows
Carl Engstrom:
Lapland Longspur
Carl Engstrom:
Lapland Longspurs
Carl Engstrom:
Savannah Sparrow
Carl Engstrom:
Dark-eyed Junco
Carl Engstrom:
Dark-eyed Junco
Carl Engstrom:
Dark-eyed Junco
Carl Engstrom:
Dark-eyed Junco
Carl Engstrom:
Chipping Sparrow
Carl Engstrom:
Fish Pond Fever: Part I
Carl Engstrom:
Henslow's Sparrow
Carl Engstrom:
Mystery Bird
Carl Engstrom:
Song Sparrow
Carl Engstrom:
Song Sparrow (Northwestern subspecies)
Carl Engstrom:
Mystery Bird (blur)
Carl Engstrom:
Dark-eyed Junco (Slate-colored)
Carl Engstrom:
eBird Doc Shot: Chipping Sparrow
Carl Engstrom:
eBird Doc Shot: Harris's Sparrow
Carl Engstrom:
Lapland Longspur
Carl Engstrom:
Savannah Sparrow
Carl Engstrom:
"Gambel's" White-crowned Sparrow
Carl Engstrom:
Harris's Sparrow
Carl Engstrom:
Mystery Flock VIII
Carl Engstrom:
'White-winged' Dark-eyed Junco?
Carl Engstrom:
Nelson's Sparrow