General impression.
Might be Jedi birding, but you really can't do much else with some photos.
Not got the time for an in-depth discussion, just wanted to comment that from this photo it's not clear cut that this bird is an AGP, given that there's been a Dotterel there too.
Original poster can provide the field notes, not my job mate!
EDIT Ok, tea break time in the office, so a bit more time - what could make it a Dotterel...
* Bill appears short
* Appears to be a peachy wash to the underparts, possibly too clean for AGP
* Mantle patterning seems OK for Dotterel
All of the above could be artefactual; but there's not been a whole lot of discussion of the pro-AGP features either.
Anyway, that'll teach me to comment on birds that I've not seen (or even attempt to post any suggestions on the ID forum!), will wait until I've been and grilled the flock before I post again.