Black and Bar -tailed Godwit

Size comparison of 2 Godwits.
Black-tailed Godwit on left, Bar-tailed Godwit on right.

Bar-tailed Godwit Br

Bar-tailed Godwit, Adult breeding. 

Bar-tailed Godwit NBr-Br

Bar-tailed Godwit, moult to adult breeding.

Tail.

Tail, uppertail-covers and tertials.

Bar-tailed Godwit J

Bar-tailed Godwit, juvenile.

Tail and tertials. Showing not much wear on primaries. 

Bar-tailed Godwit Br-NBr

Bar-tailed Godwit, moult to adult non-breeding.

Has no juvenile plumage.

Very worn feathers. Shows no juvenile feathers.

Same individual.

Primaries in moult. It seems just finished long journey. It actually bit late for them to arrive, must caught in truble somewhere.

Bar-tailed Godwit J-1W

Bar-tailed Godwit, moult to 1st non-breeding.

Wing covers.

Worn juvenile tertials and tail.

Bar-tailed Godwit J-1W

Bar-tailed Godwit, moult to 1st non-breeding.

Worn wing covers.

Worn juvenile tertials, tail and primaries.

Bar-tailed Godwit NBr

Bar-tailed Godwit, adult non-breeding.

Bill length indicate female.

Tertials and tail.

Bar-tailed Godwit NBr

Bar-tailed Godwit, adult non-breeding.

Wing covers.

Tertials and tail.

Bar-tailed Godwit NBr

Bar-tailed Godwit, adult non-breeding.

Tail

Worn covers.

This individual could be the 2S to 3W. I can't say for sure.

Bar-tailed Godwit Br-NBr

 

Bar-tailed Godwit, moult to adult non-breeding.

Bill length indicate this could be a male.

 

 Same individual. Shows primaries in moult. Some worn lesser covers retain (white arrow). 

Bar-tailed Godwit 1W

Bar-tailed Godwit, post-juvenile moult.

Shows worn juvenile feathers, and some non-breeding feathers (grey un-notched ones on the scapulars).

Close-up. They usually worn out like this.

Bar-tailed Godwit 1S-2W

Bar-tailed Godwit, moult to second-non-breeding.

Shorter bill indicate male.

Same individual. 

Since this individual has few breeding plumage, and very worn primaries and wing covers, it could be in moult to second non-breeding from first breeding plumage.

Same individual.

Wing covers looks more likely to be a juvenile plumage.