Perhaps Long-tailed Jaeger

[Diane Roberts]

Hello,

I want to report my sighting of a Long-tailed Jaeger at Cherry Creek State Park Arapahoe County. Whiteish on the head, 

Barring on under wing & black tail. Will add photos. Diane Roberts, highlands Ranch

Diane Roberts

[Luke Pheneger]

Hi Diane,

Unfortunately this looks better for a gull, probably Herring but hard to say for certain.

Luke Pheneger

[Norm Erthal]

There are many problems with this being a jaeger. It is missing the wing flash, the bill is too heavy. Long-tailed has a thin bill with a hook at the tip. The wings are too broad. Jaegers underneath are more obviously barred in young birds.

Norm Erthal