The tale of Yosemite Sam: How a California hummingbird got lost and landed in Saskatoon
 

Costa’s hummingbirds are native to the Southwestern United States and Western Mexico. The mystery of how the tiny hummingbird got to Saskatoon*caught the eye of Environment Canada Chemist Geoff Koehler. His team used stable isotope techniques from a tail feather to determine where the bird came from.


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