Read about the 50 year old bird banding program at Powdermill Avian Research Center. There is also a short video showing how the system works.
After its capture, this common yellowthroat will be identified from a band already on its leg, and then its age, sex, weight, chest fat and wing length will be recorded. That's the same process used at Powdermill on more than 520,000 birds before it during the past 50 years.
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