Please CLICK on Pictures for specific data and File Numbers for photos: 
 
| Black-tailed Gnatcatcher, Polioptila
  melanura <#602> -- J. Farrand, Jr.     | Blue-gray Gnatcatcher, Polioptila
  caerulea <#322> -- H. Clarke     | Blue-gray Gnatcatcher, Polioptila
  caerolea <#482>  --
  K. Hansen, J. Petersen & T. Theimer     |