Family Petrels, Shearwaters (Procellariidae)

Critically Endangered

Newell's Shearwater (Puffinus newelli)


Taxonomy

French: Puffin de Newell German: Hawaiisturmtaucher Spanish: Pardela de Newell
Taxonomy:

Puffinus newelli

Henshaw

, 1900,

Maui, Hawaiian Islands

.

Sometimes treated as a race of P. puffinus. Usually considered conspecific with P. auricularis, but slightly larger and with longer tail, for which effect size (from published data#R) 3.29 (score 2); no grey flecking on throat sides, so that dark head pattern appears cleaner-cut (1); bolder, squarer dark mark on neck side (2); undertail-coverts white vs white-edged grey (2); darker upperparts (ns[1]). Until recently also considered conspecific with P. myrtae, a taxon that prior to this was usually placed in P. assimilis. Monotypic.

What do (1) and (2) mean? Learn more about the scoring system.
Distribution:

C Pacific Ocean, breeding on islands of Lehua (off N Niihau), Kauai, Molokai and Hawaii, and possibly also on Oahu, Maui and Lanai#R, in Hawaiian Is.

Descriptive notes

32–38 cm; 291–425 g; wingspan 77–89 cm. Rather small, contrastingly blackish and white, with variable amount of blackish on undertail-coverts. Compared to... read more

Voice

Gives repeated series of 2–5 (usually three) jackass-like braying notes followed by 1–2 additional... read more

Habitat

Marine, occurring in warm subtropical offshore and pelagic waters. Breeds on islands, in areas with... read more

Food and feeding

First detailed data published within last few years, based on analysis of stomach contents of recent fledglings found dead on Kauai, Hawaii... read more

Breeding

Arrives at colonies in last week of Apr, followed by two-week pre-laying exodus, with laying in first week of Jun and young departing... read more

Movements

Little known; thought to disperse to adjacent seas; recorded S to waters just N of Galápagos Is.... read more

Status and conservation

CRITICALLY ENDANGERED. Population estimated at 4000–6000 breeding pairs, although pelagic surveys in mid 1990s indicated c. 84,000 birds, or breeding population of 16,700–19,... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2018). Newell's Shearwater (Puffinus newelli). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/467278 on 18 December 2018).