What human food source do Western Tanagers sample as liquid energy during migration?
Answer
Hummingbird feeders containing a standard sugar-water solution
While Western Tanagers are not considered primary feeder birds compared to species like finches or chickadees, they will investigate supplementary food sources, especially when highly motivated to refuel during migration. The most notable attraction seems to be liquid sugar. They are known to sample the nectar provided in hummingbird feeders, which typically contain a standard sugar-water solution. This liquid energy source offers quick fuel absorption, mirroring the rapid energy uptake provided by the natural fruit sugars they seek.

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