Cassin's Sparrow is a bird of dry southern grasslands and shrubby desert edges. Males perform a distinctive 'skylarking' display — flying up several feet and parachuting down while singing a clear, sweet song. It is one of the most range-fluid sparrows, appearing and disappearing from areas depending on rainfall and grass conditions. It is extremely secretive when not singing.
Best time to see a Cassin's Sparrow
The best time to see a Cassin's Sparrow is March–July, when about 64% of U.S. sightings happen, based on 1,536 research-grade iNaturalist observations.
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