Egg neglect under risk of predation in Cassin ’ s Auklet ( Ptychoramphus aleuticus )

  title={Egg neglect under risk of predation in Cassin ’ s Auklet ( Ptychoramphus aleuticus )},
  author={Robert A. Ronconi and J. Mark Hipfner},
We tested predictions concerning the significance of egg neglect for the burrow-nesting seabird Cassin’s auklet (Ptychoramphus aleuticus (Pallas, 1811)) at a colony where endemic Keen’s mice (Peromyscus keeni Merriam, 1897) depredate unattended eggs. A video-camera probe was used to monitor neglect and predation in 32 burrows, and mass loss of incubating adults was measured in 12 separate burrows. Incubating birds lost 8.1% of their body mass over obligate 24 h incubation shifts, suggesting… CONTINUE READING
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