Thanks to Yale e360 for this note:
California’s Central Valley and the Colorado River Delta host more than 82 million birds every year during the spring migration, according to a new study published in the journal Ornithological Applications. The findings highlight the regions as critical corridors for conservation, with up to 80 percent of some species’ populations passing through the two areas.
Scientists have long suspected that the Central Valley and the Colorado River Delta were vital migratory stopovers, but “there really wasn’t any kind of science or data to back up those claims,” William DeLuca, lead author of the study and a migration ecologist for the National Audubon Society’s Migratory Bird Initiative, told Audubon magazine. “I don’t think we realized just how important they were to land birds during migration.”…
Read the whole note here.