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Nesting seabirds on the Kaikué-Lagartija Island Nature Sanctuary, Calbuco Archipelago, southern Chile
Citation
CURSACH, J.A., VILUGRON, J., RAU, J.R., OYARZUN, C. & PROVOSTE, M. 2021. Nesting seabirds on the Kaikué-Lagartija Island Nature Sanctuary, Calbuco Archipelago, southern Chile.
Marine Ornithology 49: 91
- 95
http://doi.org/10.5038/2074-1235.49.1.1403
Received 04 May 2020, accepted 20 August 2020
Date Published: 2021/04/15
Date Online: 2021/03/10
Key words: Kaikué-Lagartija Island, nesting seabirds, Patagonia, seabird conservation
Abstract
Kaikué-Lagartija Island, one of the few sites in the Calbuco Archipelago (southern Chile) that is still in its natural state, has been declared a Nature Sanctuary. However, little has been published regarding the island's natural history. Here we describe the assemblage of nesting seabirds on Kaikué-Lagartija Island, including estimates of abundance, during the breeding seasons of 2012/13, 2014/15, and 2015/16 for eight species found nesting. The Magellanic Penguin Spheniscus magellanicus is the most abundant seabird on this island, with a breeding population of around 200 pairs. The number of nesting pairs of Kelp Gull Larus dominicanus increased from 17 to 23 active nests during the study. Only one pair of Red-legged Cormorant Phalacrocorax gaimardi and five pairs of Rock Shag Phalacrocorax magellanicus nested on the island. In the 2012/13 season, five pairs of the Imperial Shag Leucocarbo atriceps nested, but the area was subsequently colonized by roosting Peruvian Pelicans Pelecanus thagus. Also observed were Fuegian Steamer Ducks Tachyeres pteneres, Dark-bellied Cinclodes Cinclodes patagonicus, and Snowy Egrets Egretta thula. Clearly, the Kaikué-Lagartija Island Nature Sanctuary, though small, is of high value for the conservation of seabirds endemic to Patagonia. Future lines of research for the conservation of nesting seabirds on the island were identified.
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