Spring migration is one of the most exciting times of the year for birding in Colorado.
One way we are made aware of the progress of migrations is by noting the wide variety of species as well as the volume of migrating birds through our state via Cobirds.
A rare species is a rather subjective label, rare to one birder is not so rare to another birder depending on season and location. We all have a choice to chase or not to chase or just observe the action on Cobirds.
Bob Righter
Denver, CO
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