Oceanodroma leucorhoa
(Vieillot, 1818) · speciesAt a glance
Sources11 archives
Databases and archives Oceanodroma leucorhoa's data was compiled from.
WikipediaWikimedia Foundation15 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility32 169 records↗
OBISOcean Biodiversity Information System32 047 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI18 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics16 specimens↗
Open Tree of LifeOpenTreephylogeny backbone↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
NCBIUS National Library of Medicinegenome & karyotype↗
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Leach's storm petrel or Leach's petrel (Hydrobates leucorhous) is a small seabird of the tubenose order. It is named after the British zoologist William Elford Leach. The scientific name is derived from Ancient Greek. Hydrobates is from hydōr "water", and batēs "walker", and leucorhous is from leukos, "white" and orrhos, "rump". It was formerly defined in the genus Oceanodroma before that genus was synonymized with Hydrobates. It breeds on inaccessible islands in the colder northern areas of the Atlantic and Pacific Oceans. It nests in colonies close to the sea in well concealed areas such as rock crevices, shallow burrows, or even logs. It lays a single white egg, which often has a faint ring of purple spots at the large end. This storm petrel is strictly nocturnal at the breeding sites to avoid predation by gulls and skuas, and even avoids coming to land on clear, moonlit nights. The largest colony of Leach's storm petrels can be found on Baccalieu Island of eastern Canada, an ecological reserve with ~1.95 million pairs of the birds at last estimate in 2013.WILHELM, S., HEDD, A., ROBERTSON, G., MAILHIOT, J., REGULAR, P., RYAN, P., & ELLIOT, R. (2020). The world’s largest breeding colony of Leach’s Storm-petrel Hydrobates leucorhous has declined. Bird Conservation International, 30(1), 40-57. doi:10.1017/S0959270919000248
No narrative description available for this taxon yet.
Size & morphology14
Life cycle & reproduction13
Diet & foraging7
Habitat & environment6
Other traits1
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Oceanodroma leucorhoa has left across the world's sequence archives.
At a glance
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
The complete instruction manual Oceanodroma leucorhoa carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
Record type64 216 records
Origin
Range
Depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions34 of 59 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Washington, US | 636 |
| Los Angeles, US | 249 |
| Chongqing Museumlocation not on record | 134 |
| San Diego, US | 111 |
| Seattle, US | 92 |
| Ithaca, US | 85 |
| University of California Los Angeleslocation not on record | 58 |
| Natural History Museum Rotterdamlocation not on record | 53 |
| Saint John, CA | 45 |
| CASlocation not on record | 42 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 40 |
| 37 | |
| Louisiana State University, Museum of Zoologylocation not on record | 32 |
| Cambridge, US | 31 |
| Albany, US | 30 |
| Washington State University, Charles R. Conner Museumlocation not on record | 26 |
| Edmonton, CA | 20 |
| IMEDEAlocation not on record | 17 |
| Denver, US | 16 |
| Honolulu, US | 16 |
| South Kensington, GB | 13 |
| Wuzhou, CN | 10 |
| US | 10 |
| Brussels, BE | 8 |
| Delaware Museum of Nature and Sciencelocation not on record | 7 |
| Iowa City, US | 6 |
| Ohio State University - Bird Division, Columbus, OH (OSUM)location not on record | 6 |
| MNHAHlocation not on record | 6 |
| RBINS-Scientific Heritagelocation not on record | 6 |
| Tromsø, NO | 5 |
| Chicago, US | 4 |
| Philadelphia, US | 4 |
| University of Nebraska State Museumlocation not on record | 4 |
| Gothenburg, SE | 4 |
| Bergen, NO | 4 |
| Zacatecas, MX | 3 |
| Mongolian Museum of Natural Historylocation not on record | 3 |
| The University of the West Indies, Trinidad and Tobagolocation not on record | 2 |
| Puerto Ayora, EC | 2 |
| Chicago, US | 2 |
| München, DE | 2 |
| University of Victorialocation not on record | 2 |
| Buenos Aires, AR | 2 |
| Natural History Museum of Utahlocation not on record | 2 |
| Geneva, CH | 2 |
| Sam Noble Oklahoma Museum of Natural Historylocation not on record | 2 |
| Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH)location not on record | 1 |
| MZLUlocation not on record | 1 |
| Copenhagen, DK | 1 |
| Musée des Confluenceslocation not on record | 1 |
| Yamashina Institute for Ornithologylocation not on record | 1 |
| Tilburg, NL | 1 |
| Mexico City, MX | 1 |
| Kristiansand, NO | 1 |
| Ugentlocation not on record | 1 |
| Provincia di Livornolocation not on record | 1 |
| Barcelona, ES | 1 |
| EEZAlocation not on record | 1 |
| New Haven, US | 1 |
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Where the DNA of Oceanodroma leucorhoa was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.