Hilty, Steven L., 1945- (2003). Birds of Venezuela. London: Christopher Helm. ISBN0-7136-6418-5. OCLC51031554.{{cite book}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
ffrench, Richard. (1991). A guide to the birds of Trinidad and Tobago. O'Neill, John P., 1942-, Eckelberry, Don R. (2nd ed.). Ithaca, N.Y.: Comstock Pub. Associates. ISBN0-8014-2567-0. OCLC23016733.