Tristram's Storm-Petrel
Hydrobates tristrami
Dark brown, fork-tailed seabird of the northwestern and central Pacific, where it breeds on Japanese and Hawaiian islands. Generally forages far offshore and does not associate with boats. Dark chocolate-brown overall with prominent pale carpal bars. In optimal light, rump is slightly paler than the plumage of the back and tail, unlike in Markham’s and Leach’s Storm-Petrels; in fresh plumage, note gray sheen to head and back. Lacks the distinctively pale primary shafts of Matsudaira's and Swinhoe’s Storm-Petrels.
Taxonomy
The holotype specimen of Oceanodroma tristrami Salvin (Cat.Bds.Brit.Mus., 25,1896, p.347) is held in the vertebrate zoology collection of World Museum, National Museums Liverpool, with accession number NML-VZ T9781. The specimen was collected by Lieutenant Gunn at Sendai Bay, Japan, July 1874, and came to the Liverpool national collection through the purchase of Henry Baker Tristram's collection. It was formerly defined in the genus Oceanodroma before that genus was synonymized with Hydrobates.
- Scientific name
- Hydrobates tristrami
- Authority
- (Salvin, 1896)
- Order
- Procellariiformes
- Family
- Hydrobatidae
- Genus
- Hydrobates
Range and habitat
- Breeding range
- PO : Izu, Ogasawara (=Bonin) and formerly Iwo (=Volcano) is. (s of Japan), and Northwestern Hawaiian Is.
- Non-breeding range
- to e coastal waters of mainland Japan and to Kauai (w main Hawaiian Is.)
- Migration
- Complete migrants
Conservation
- Population trend
- stable
Photos
Distribution
Bird Calls
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