SPECIES

Markham's Storm-Petrel Oceanodroma markhami

Fernando Medrano, Jacob Drucker, and Alvaro Jaramillo
Version: 2.0 — Published October 29, 2020

Diet and Foraging

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Feeding

Main Foods Taken

As in other storm-petrels, the diet is apparently composed by cephalopods, fish and small crustaceans.

Food Capture and Consumption

The foraging habits are mostly unknown, but it seems to have a relatively (compared with other storm-petrels) medium wing loading and short tarsi, which could be related to the type of foraging (17), in which it flies "into the wind with steady wingbeats, occasional pauses, and short glides, swooping up to drop on food and patter briefly, the wings raised in a V and bowed slightly at the wrist" (4). They also appear to pick at food while they are on the water, while their wings are raised and fluttering (4).

Diet

Major Food Items

Off Peru, the diet of Markham's Storm-Petrel consists of 54% fish, 36% cephalopods, and 10% crustaceans (18). Peruvian anchovy (Engraulis ringens), pelagic squat lobster (Pleuroncodes monodon), and Oceanic octopus (Japetella sp.) were the most commonly consumed organisms, respectively (18). The diet apparently varies yearly, particularly during El Niño and La Niña events, when changes in water temperature alter the availability of target prey items (18).

Food Selection and Storage

No information available.

Nutrition and Energetics

No information available.

Metabolism and Temperature Regulation

No information available.

Drinking, Pellet-Casting, and Defecation

No information available.

Recommended Citation

Medrano, F., J. Drucker, and A. Jaramillo (2020). Markham's Storm-Petrel (Oceanodroma markhami), version 2.0. In Birds of the World (T. S. Schulenberg, S. M. Billerman, and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.maspet.02