ML646425758

觀察細節

Heard, calling repeatedly, finally found them, 1 perched at very top of cotton wood and 1 on the outer branches. Confirmed by white tipped tail and yellow under parts observed in flight. Saw them again later chasing each other back and forth over the river. Observed gray head and white throat patch when perched. Potentially 5, wasn't sure if they were following me but I had 3 together.