Literature references

4 literature references:

Author: Gill, Frank, Minturn Wright
Year: 2006
Title:
Source: Birds of the World: Recommended English Names
Author:
Year: 2011
Title:
Source: AOU Check-List (08-2011)
Author:
Year: 2011
Title:
Source: IOC World Bird List, Master List v2.9
Author:
Year: 2005
Title:
Source: website, AOU Check-List (07-2005)