http://droughtreporter.unl.edu/

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Hundreds of thousands of purple martins fly into southeast Texas during the summer from late July to September. The birds typically consume flying insects before departing for South America, but drought reduced their food supply, limited the number of birds in the state and prompted the birds to leave earlier than usual. The Houston Audubon Society canceled their last purple martin watch party scheduled for Sept. 17. Beaumont Enterprise (Texas), Sept 14, 2023