Birds 'falling out of the sky' in mass die-off in south-western US
Flycatchers, swallows and warblers are among the species “in a mass die-off across New Mexico, Colorado, Texas, Arizona and farther north into Nebraska.
Flycatchers, swallows and warblers are among the species “in a mass die-off across New Mexico, Colorado, Texas, Arizona and farther north into Nebraska.
