WATCH | Quebec’s cardinal population is booming. This researcher thinks she knows why

Woman in right third of frame dressed in winter gear holding a radio frequency sensor, with a thumbs up. Cardinal superimposed on left side of frame.

A graduate student at McGill University tagged 41 birds with antennas last winter. She says bird feeders in residential areas can be a reliable source of food for cardinals.



source https://www.cbc.ca/player/play/9.6448117?cmp=rss
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