1. AINLEY, D. G. 1977. Feeding methods of seabirds: acomparison of polar and tropical nesting communi-ties in the eastern Pacific Ocean, p. 669-686. In G.H. Llano [ed.], Adaptations within Antarctic ecosys-tems. Gulf Publ. Co., Houston, TX.AinleyFeeding methods of seabirds: a comparison of polar and tropical nesting communities in the eastern Pacific Ocean669Adaptations within Antarctic ecosystems1977
2. ASHMOLE, N. P. 1971. Seabird ecology and the marineenvironment, p. 223-286. In D. S. Farner, D. R. King,and K. C. Parkes [eds.], Avian biology. Vol. 1. Aca-demic Press, New York.AshmoleSeabird ecology and the marine environment2231Avian biology1971