Hennemann, W. W., III (1984). "Spread-winged behaviour of double-crested and flightless cormorants Phalacrocorax auritus and P. harrisi: wing drying or thermoregulation?". Ibis. 126 (2): 230–239. doi:10.1111/j.1474-919X.1984.tb08002.x.{{cite journal}}: CS1 maint: multiple names: authors list (link)
Curry-Lindahl, Kai (1970). "Spread-Wing Postures in Pelecaniformes and Ciconiiformes". The Auk. 87 (2): 371–372. doi:10.2307/4083936. JSTOR4083936.
See Siegel-Causey 1988, Orta (1992) and Kennedy et al. (2000) for a review of classification schemes. Siegel-Causey, Douglas (1988). "Phylogeny of the Phalacrocoracidae". The Condor. 90 (4): 885–905. doi:10.2307/1368846. JSTOR1368846.
Curry-Lindahl, Kai (1970). "Spread-Wing Postures in Pelecaniformes and Ciconiiformes". The Auk. 87 (2): 371–372. doi:10.2307/4083936. JSTOR4083936.
See Siegel-Causey 1988, Orta (1992) and Kennedy et al. (2000) for a review of classification schemes. Siegel-Causey, Douglas (1988). "Phylogeny of the Phalacrocoracidae". The Condor. 90 (4): 885–905. doi:10.2307/1368846. JSTOR1368846.