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for specific data and File Numbers
for photos:
 
| 
   Black-crowned Night Heron, Nycticorax nycticorax
  <#629> --
  J. J. Audubon        | 
  
   Black-crowned Night-Heron, Nycticorax nycticorax
  <#350> --
  H. Clarke        | 
  
   Black-crowned Night Heron, Nycticorax (Nyctanassa) nycticorax hoactli <#259> -- A.
  Menaboni      | 
  
   Great Blue Heron, Ardea herodias <#222> -- J. J. Audubon      | 
 
| 
   Great Blue Heron, Ardea herodias <#44> -- R. Leung      | 
  
   Green or Green-backed Heron, Butorides striatus <#349> -- H. Clarke    | 
  
   Green or Green-backed Heron, Butorides striatus
  <#665> --
  J. J. Audubon      | 
  
   Green or Green-backed Heron, Butorides striatus <#408> -- A. Brooks      | 
 
 
| 
   Louisiana Heron, Hydranassa tricolor
  <#143> --
  J. J. Audubon        | 
  
   Yellow-crowned Night Heron, Nycticorax (Nyctanassa) violaceus <#743> -- J. J.
  Audubon    | 
  
   Yellow-crowned Night Heron, Nycticorax (Nyctanassa)
  violaceus <#384>
  -- H. Clarke    |