White-rumped Sandpiper (click to see the larger version)

White-rumped Sandpipers are late spring migrants in the United States. In fact, they’re one of the last migrants seen in the spring, with some still moving north well into June. This bird, one of two White-rumpeds present, was taking a break at Montrose Beach on June 5. Note the reddish base to the lower mandible, a field mark that helps distinguish White-rumpeds from other small sandpipers.