Sprague's Pipit Anthus spragueii
Flight call description A high, squeaky "syip" delivered singly or in a short series of separate notes.
Fig.1. Texas April 11, 1996 (MO).
Bird in flight.
Examples Diurnal
Similar species See American Pipit.
Behavior
Primarily a nocturnal migrant but engages in resumed migration. Flight
calls are given almost exclusively by birds in flight and only rarely
by perched birds. Not known to call in nocturnal migration.