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Presence of the Peruvian Pelican Pelicanus thagus in seabird colonies of Chilean Patagonia
Citation
CURSACH, J.A., RAU, J.R. & VILUGRÓN, J. 2016. Presence of the Peruvian Pelican Pelicanus thagus in seabird colonies of Chilean Patagonia. Marine Ornithology 44: 27 - 30
Received 30 July 2015, accepted 18 December 2015
Date Published: 2016/04/15
Date Online: 2017/02/28
Key words: Chile, competitive interactions, foraging in seabird colonies, Peruvian Pelican, range expansion
Abstract
Over the past few years, an increase in Peruvian Pelican Pelecanus thagus presence has occurred in southern Chile, along the coast of the Los Lagos region, at the southern end of its range. We evaluate the presence of the pelicans in seabird colonies of this region and describe their behavior and interactions with other seabird species. Three colonies were surveyed: San Pedro Bay Islets (40^55'S), Kaikue'-Lagartija Island (41^48'S) and Caicura Island (41^42'S). Counts were carried out from boats, and age structure was determined based on plumage color. Pelicans were found to be numerous and included a high proportion of juveniles. With the exception of one pelican egg (unhatched) found at Caicura Island in December 2013, there was no evidence of pelican nesting. Potential competitive interactions between the pelicans and other seabirds were evident.
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