Pigeon Guillemot (Cepphus columba adiantus) 14 May 2017. Dutch Harbor, Unalaska, Alaska
![]() References: Ewins, Peter J.(1993).Pigeon Guillemot (Cepphus columba), The Birds of North America (P. G. Rodewald, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America: https://birdsna.org/Species-Account/bna/species/piggui Nettleship, D.N. & Boesman, P. (2017). Pigeon Guillemot (Cepphus columba). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/54064 on 6 July 2017). |