Birders reported a large die-off of warblers, like the one pictured above, in Colorado and elsewhere last month. Photo courtesy Sue Hirshman
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The catastrophe of last month’s bird migration
Birds are the barometer Of the environment
-Many scientists-
Every year it seems the bird population of songbirds and other species goes down in numbers of survival.
In the first part of September, I thought we would have a good year for warblers’ success as we were seeing them in high numbers. Other birders reported also that they were seeing high numbers of Wilson’s warblers, yellow warblers, Audubon (yellow-romped) warblers, and orange-crowned warblers. Many shorebirds also visited t...
