Chart 8:
DATES FOR NEW BANDINGS of
ADULT & JUVENILE
RUBY-THROATED HUMMINGBIRDS

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CHART 8: At Hilton Pond Center for Piedmont Natural History near York, South Carolina USA, new bandings of Ruby-throated Hummingbird adults begin as early as 27 Mar and continue as late as 17 Sep. The earliest juvenile was banded on 9 Jun and the latest on 18 Oct.

The early peak of adult RTHUs at the Center in mid-March reflects the arrival of future resident breeders AND migrants that pass on through; another large but mysterious peak in early June may indicate a second wave of adult migrants. The peak of adults in mid-July likely represents an influx of wandering females that have completed nesting responsibilities and males that no longer are defending territories.