SPECIES

Pink-footed Shearwater Ardenna creatopus Scientific name definitions

Ryan D. Carle, Valentina Colodro, Jonathan Felis, Joshua Adams, and Peter J. Hodum
Version: 2.0 — Published April 9, 2022

Sounds and Vocal Behavior

Introduction

Vocalizes on breeding colonies and at sea. Certain vocalizations are strongly associated with presence/activity at breeding colonies.

Vocalizations

Development

No information.

Vocal Array

Two different types of in-flight vocalizations, categorized as Type I and Type II, were recognizable at colonies on the Juan Fernández Islands (PJH). The Type I call is a multi-syllabic nasal vocalization ( ) . The Type II call is a single extended syllable. Type II calls were also heard from birds interacting outside of burrows. Birds vocalize while underground in burrows, both in response to above-ground stimuli and prospecting birds entering the burrow (PJH). Pairs in burrows will also perform a duetting vocalization (PJH). Howell (2) described “nasal bleating” and “squawking calls” during foraging. Short, repetitive vocalizations are made by one or both individuals of a pair during copulation (RDC).

Geographic Variation

No quantitative study of geographic variation in vocalizations between colonies, but no obvious differences have been noted qualitatively (RDC, PJH).

Phenology

Based on preliminary observations, the frequencies and proportions of Type I and Type II calls varied over the course of the breeding period (PJH). The reasons for this is unknown.

Daily Pattern of Vocalizing

Based on preliminary observations, the frequencies and proportions of Type I and Type II calls varied over the course individual nights (PJH).

Places of Vocalizing

Certain vocalizations are strongly associated with presence/activity at breeding colonies (PJH). Also vocalizes at sea, based on recordings made from boats.

Sex Differences

No information.

Social Context and Presumed Functions of Vocalizations

Vocalizes while flying over colonies during the breeding period, presumably as part of courtship display (PJH). While outside of burrows in the breeding colony, uses multiple vocalizations as part of courtship and in agonistic displays (PJH). In the burrow, pairs perform duetting vocalizations consistent with pair-bond maintenance (PJH). At sea, birds use agonistic vocalizations to warn other birds away from food resources (PJH).

Nonvocal Sounds

None reported.

Recommended Citation

Carle, R. D., V. Colodro, J. Felis, J. Adams, and P. J. Hodum (2022). Pink-footed Shearwater (Ardenna creatopus), version 2.0. In Birds of the World (P. G. Rodewald and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pifshe.02