[Mystery bird] Red Knot, Calidris canutus, photographed at Quintana, Texas. [I will identify this bird for you in 48 hours]
Image: Joseph Kennedy, 30 September 2009 [larger view].
Nikon D200, Kowa 883 telescope with TSN-PZ camera eyepiece 1/750s f/8.0 at 1000.0mm iso400.
Please name at least one field mark that supports your identification.
The rare rusty-butted sneetch. Field mark? rusty butt!
A sandpiper. All of those little mottled wading things are sandpipers, right?
I've always thought that there should be a field guide of bird's butts.
Having worked on various horseshoe crab projects in the Delaware Bay, I am familiar with this bird as it stops off en route from Argentina to fatten up on crab eggs...
Red Knot, Calidris canutus: dark legs, dark bill; breeding plumage is mottled grey on top ("scaley") with reddish face, throat and breast (not visible above) and light-coloured rear belly