Possible Jaeger - species ?? This is an "unknown" bird to me..so this is what I observed.
A group of ring-billed gulls were harassing a flock of hooded mergansers, with the gulls was a VERY Dark bird about the same size as the gulls that was harassing the gulls. My first thought was a "tern" - as it had the very sharp pointed wings, that sweep back, and there are black terns at Lake North - BUT this was too large, and the terns are gone for the winter. My next thought was some sort of a gull - but the total dark body, (and wings) and extremely pointed wings (with faint white area on underside - towards tip) didn't match any gull. After looking through my Sibley's...best "guess" is a Jaeger - maybe a Parasitic??? I didn't know if that is a possibility in Nebraska - but I see in "Birds of Nebraska" that it is a possibility. Any other ideas?