Marine Biology

, Volume 162, Issue 1, pp 99–110

Winter foraging site fidelity of king penguins breeding at the Falkland Islands

  • Alastair M. M. Baylis
  • Rachael A. Orben
  • Pierre Pistorius
  • Paul Brickle
  • Iain Staniland
  • Norman Ratcliffe
Original Paper

DOI: 10.1007/s00227-014-2561-0

Cite this article as:
Baylis, A.M.M., Orben, R.A., Pistorius, P. et al. Mar Biol (2015) 162: 99. doi:10.1007/s00227-014-2561-0

Abstract

Foraging site fidelity has profound consequences for individual fitness, population processes and the effectiveness of species conservation measures. Accordingly, quantifying site fidelity has become increasingly important in animal movement and habitat selection studies. To assess foraging site fidelity in king penguins (Aptenodytes patagonicus) breeding at the Falkland Islands (51.48°S, 57.83°W), we measured overlap in time spent in foraging areas (at a 0.1° × 0.1° grid resolution) between successive foraging trips and foraging route consistency during the crèche period. In total, 30 complete foraging trips from seven king penguins were recorded between April and October 2010. King penguins predominantly foraged on the highly productive Patagonian slope, to the north of the Falkland Islands [median foraging trip distance 213 km (SD = 215 km) and duration 12.8 days (SD = 14.7 days)]. Overlap in time spent in an area on consecutive foraging trips ranged between 2 and 73 % (mean 27 %, SD = 22 %). Bearing during the outbound portion of foraging trips was typically highly repeatable for individual birds, but foraging trip duration and distance were not. Travel during the outbound phase of foraging trips was consistent with the direction of the northward-flowing Falkland Current that may act as a directional cue or facilitate rapid transit to foraging areas. Flexibility in foraging trip distances and durations may be a response to changes in resource availability and changes in the energetic requirements of adults and chicks over an extended breeding cycle.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Alastair M. M. Baylis
    • 1
    • 2
    • 3
  • Rachael A. Orben
    • 4
  • Pierre Pistorius
    • 5
  • Paul Brickle
    • 3
  • Iain Staniland
    • 6
  • Norman Ratcliffe
    • 6
  1. 1.Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityWarrnamboolAustralia
  2. 2.Falklands ConservationStanleyFalkland Islands
  3. 3.South Atlantic Environmental Research InstituteStanleyFalkland Islands
  4. 4.Department of Ocean Sciences, Long Marine LabUniversity of California Santa CruzSanta CruzUSA
  5. 5.DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, Department of ZoologyNelson Mandela Metropolitan UniversityPort ElizabethSouth Africa
  6. 6.British Antarctic Survey NERCCambridgeUK