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Backyard feeders changed the shape of hummingbird beaks, scientists say

"According to a recent study in Global Change Biology, a journal focused on environmental change, the use and prevalence of hummingbird feeders — like those red and clear plastic ones filled with homemade sugar water — changed the size and shape of the birds' beaks. The range of the hummingbird also spread from the southern part of California all the way up the West coast into Canada."

https://www.npr.org/2025/05/23/nx-s1-5409073/annas-hummingbird-backyard-feeders