Black Tern juvenile

Black Tern juvenile

Observation - Black Tern juvenile. Description: Apologies for the highly cropped photos. Small dark tern, mantle and wings uniformly dark grey. Dark smudge on shoulder. A juvenile Photo 3 includes White-winged Tern for comparison, Black Tern is on the left

Apologies for the highly cropped photos.
Small dark tern, mantle and wings uniformly dark grey. Dark smudge on shoulder. A juvenile
Photo 3 includes White-winged Tern for comparison, Black Tern is on the left