Sandpiper in Southern Ontario (1 Viewer)

[osbirder]

This sandpiper was quite a bit smaller than the nearby Pectoral Sandpipers. Which species is it?

 

[JWN Andrewes]

Juv White-rumped.

 

[osbirder]

Thank you.

 

[smiths]

It's actually a juvenile Semipalmated Sandpiper.
Juv. White-rumped would show much longer primary projection as well as distinct dark streaking on underparts.

 

[Bewick]

It's actually a juvenile Semipalmated Sandpiper.
Juv. White-rumped would show much longer primary projection as well as distinct dark streaking on underparts.

Unsure what you mean by distinct dark streaking on underparts- do you mean on the flanks? Also primary projections look long enough for white rumped imo.

 

[Michael Long]

White-rumped imo, the diagnostic orange base to the mandible can be seen in the 3rd photo on the right bird

 

[smiths]

White-rumped imo, the diagnostic orange base to the mandible can be seen in the 3rd photo on the right bird

Right-hand bird in photo #3 is a Pectoral Sandpiper...
(note greenish legs).

 

[Bewick]

Right-hand bird in photo #3 is a Pectoral Sandpiper...
(note greenish legs).

Mentioned that in the post.

 

[Michael Long]

Right-hand bird in photo #3 is a Pectoral Sandpiper...
(note greenish legs).

It indeed is.... please ignore my post

 

[smiths]

Unsure what you mean by distinct dark streaking on underparts- do you mean on the flanks? Also primary projections look long enough for white rumped imo.

Dark streaking on central breast and rear flank, both lacking here.
As for primary projection, here is a comparison with a real juv. White-rumped sandpiper.
Note also how the wings extend further beyond the tail in this species.

 

[Bewick]

Dark streaking on central breast and rear flank, both lacking here.
As for primary projection, here is a comparison with a real juv. White-rumped sandpiper.
Note also how the wings extend further beyond the tail in this species.

View attachment 1533964

That’s what I thought you meant by streaking, thanks Ive changed my mind to semipalmated as well.