Adult Thayer's Gull showing pale
underside to primaries, the outer primary wing pattern, pale
brownish eye, bright pink legs. Heritage Park in Barrie on 28
December 2015. This is the same individual we have seen on 17, 18
and 26 December 2015.
While swimming, it
showed large white spots (primary tips) in folded primaries.
It was diving for
minnows and showing the white underside to the wings