IL birds.

Adult Caspian Tern showing the primary dark tips to P8,7,6:
Correlate the dark tips on the sitting birds: (P10,9 light)

Black Tern first winter:

Filler. Turkey Vulture juvenile:
Stilt Sandpiper: juvenile

Odd sandpipers. Collard-Pec: adult

GRAPHIC TUMOR. juvenile Least with tumor on tibia and malformed bill:

Buff-breasted in water:
white under-wings:

Shorebird Doubles. I'll name one, you ID the other: (it ain't easy, open book)
Back bird is a Pectoral Sandpiper:

Left bird is a juvenile Least Sandpiper:

Left bird is a Semipalmated Sandpiper:

Bill Rudden
St. Louis
The Audubon Society of Missouri's Wild Bird Discussion Forum
ASM Fall Meeting: September 24-26 at Camp Clover Point