Semipalmated Plover at Clear Creek and Lowell Blvd. Adams County question

[Robert Canter]

Hi Cobirders

I have seen three Semipalmated Plovers on the exposed shoreline of Clear Creek today, July 16,and  yesterday. They are smaller than the nearby Killdeer. Have a single neck band instead of two. They are rounder shaped than Spotted Sandpipers and  do not have spots below or the white in front of wing. Ebird tells me they would be unexpected here at this time. How readily should  they be expected here at this time of year? Piping Plovers would seem to be even less expected here.

Thank you, Bob Canter, Denver

[Joe]

Possibly young Killdeer, Robert, which are “one-stripers”.

Joe Roller, Denver

Sent from my iPhone

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[Caleb A]

Hi Joe!

I actually have a question about this. Can fledgling Killdeer have a bicolored bill like adult Semipalmated Plovers, or would a bicolored (yellow and black) bill on a plover with a single stripe around the neck be a satisfactory number of field marks to rule out any aged Killdeer?

Thanks so much!

The birds are happy, and so am I

~Caleb Alons, Larimer County

[Joe Roller]

A bicolored bill would rule out Killdeer of any age.

Strong clues about the Clear Creek plovers are time of year, habitat, and proximity of adult (mom and dad) Killdeer.

Joe Roller, Denver

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