Thursday, April 25, 2019: 40 new birds of 11 species, 15 recaps.  No new species.  Bird of the day is Ruby-crowned Kinglet with 16 new bands.

The day started chilly, but the light southwest winds and clear skies made it a pleasant day to walk around the station.  There wasn’t a large variety of species (lots of kinglets and chickadees!), but two Sharp-shinned Hawks exercised our aging skills.  With passerines, we can typically only tell that a bird that a bird hatched this year, last year, or some year before that, but we can sometimes get one more year out of raptors.  (That is, we can tell if they hatched this year, last year, the year before that, or some year even before that one).  In the end, we made conservative decisions about their ages in accordance with our motto that Uncertainty is Better than Error, and then we snapped photos and sent them off to raptor experts to perhaps learn more about what feather patterns we were seeing.