AI reconstruction created with Nano Banana 2 · 1K, grounded in the profile’s documented taxonomy, habitat, natural-history sources, and an open-license visual reference when available. It is an interpretive image, not documentary evidence. Image policy →

Verified source photographChristoph MoningCC-BY · View source ↗

PRB-0172Procellariiformes

Cory's Shearwater

Pampero Ceniciento

Calonectris borealis

Accidental / vagrantIUCN LC · Least Concern

Cory's shearwater (Calonectris borealis) is a large shearwater in the seabird family Procellariidae. It breeds colonially on the archipelago of the Azores in the eastern Atlantic. Outside the breeding season it ranges widely in the Atlantic. It was formerly considered to be conspecific with Scopoli's shearwater.

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FamilyProcellariidaeShearwaters and Petrels

Puerto Rico occurrenceAccidental / vagrantAvibase inferred core 380

Primary habitatopen-oceanSea

Primary dietFish

Average mass787.5 gGlobal trait estimate

MovementMigratory

Sound archive

Hear its voice

Explore real songs and calls. The spectrogram turns each sound into a visual trace of time and frequency.

XC990212Recording 1 of 3call, flight call

SpectrogramCalonectris borealis

0:000:30

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Sound recorded by Rubén Barone · XC990212 · CC BY-NC-SA 4.0. Visualization by Stichting Xeno-canto voor Natuurgeluiden.

Every recording retains the creator, catalogue number, and license published by Xeno-canto. Metadata via GBIF ↗

Island profile

Catalog scopeAvibase inferred core 380

About the Cory's Shearwater

Conservation

Least Concern

IUCN LC

Global IUCN: LC
Puerto Rico DNER: No current listing in source crosswalk
Federal ESA: No current listing in source crosswalk
Critical habitat: Not identified in source crosswalk

Natural history

How it lives

Habitat: open-ocean
Elevation: 0–435 m
Nest: Burrow / ground cavity; Crevice · Ground
Clutch: 1–1 eggs
Social behavior: Colonial

Keep exploring

This bird belongs to 6 paths through the atlas.

The complete catalogAll Birds of Puerto Rico402 birds →Birds by habitatSeabirds & Open-Ocean Birds41 birds →ConservationLeast Concern Birds328 birds →Occurrence in Puerto RicoAccidental & Rare Birds205 birds →Occurrence in Puerto RicoMigrants & Vagrants221 birds →Bird familyShearwaters and Petrels (Procellariidae)9 birds →

Evidence trail

Sources, media & further reading

eBird species profile↗Macaulay Library media↗iNaturalist observations↗GBIF occurrence data↗BirdLife species factsheet↗Xeno-canto recordings↗Wikipedia in English↗Wikipedia en Español↗Media source · inaturalist.org↗Source record 1↗Source record 2↗Source record 3↗Source record 4↗

Research note: Wikipedia uses Calonectris diomedea; normalized to current taxonomy Calonectris borealis.