Species status of Cassin’s Sparrow in El Paso, TX, region throughout typical year. Data from J. Donaldson and B. Zimmer pers. comm.
|Period start||Period end||Status|
|Late Dec||First week Mar||Very scarce, 1–2 birds recorded in typical day of intense field work|
|First week Mar||First week May||Singing, common|
|First week May||Mid-Jul||Gone|
|Mid-Jul||Mid-Aug||Singing heavily, common|
|Mid-Aug||Sep||Singing decreasing in intensity, stopping in Sep|
|Sep||Dec||Gone, approximately 2 records for area|