Black-capped Gnatcatcher (Polioptila nigriceps), Montosa Canyon, Santa Cruz County

This Black-capped Gnatcatcher was discovered and photographed by Tim Spahr on 23 February 2012.

Black-capped Gnatcatcher has been an extremely rare resident in SE Arizona. Historically, influxes of this species from Mexico have occurred sporadically and have persisted for a few years afterwards, followed by several years with no records. However, the incursion that began in 2002 appears to be the most widespread and longest lasting. Black-capped Gnatcatchers increased in numbers and were found in an increasing number of areas. However, over the last year or so, reports have declined and numbers seem to have decreased, suggesting this incursion may be coming to an end.

The white undetail with graduated tail feathers eliminates other gnatcatchers.  The long bill also supports Black-capped Gnatcatcher.  These birds were also giving the diagnostic call. 

23 February 2012, photo by Tim Spahr

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