Anas eatoni

(Sharpe, 1875) · species

image placeholder — illustration coming later

Animalia/Chordata/Aves/Anseriformes/Anatidae/Anas

At a glance

Occurrence records319

Data sources8

Biological traits37

DNA specimens0

eDNA detections0

Sources8 archives

Databases and archives Anas eatoni's data was compiled from.

WikipediaWikimedia Foundation12 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility319 records↗

Open Tree of LifeOpenTreephylogeny backbone↗

GoaTGenomes on a Tree · Sangergenome & karyotype↗

NCBIUS National Library of Medicinegenome & karyotype↗

WikidataWikimedia Foundationstructured facts↗

IOC World Bird ListIOCbird checklist↗

On this page4 sections

Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.

NarrativeWikipediaarticle

Traits & measurements4 literature sources37 traits

Occurrence & distributionGBIF319 records

Genome at a glanceGoaT · NCBI≈1.1 Gbp

01Narrative

Eaton's pintail (Anas eatoni) is a dabbling duck of the genus Anas. It is also known as the southern pintail.del Hoyo, J., Collar, N. & Kirwan, G.M. (2017). Southern Pintail (Anas eatoni). 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 http://www.hbw.com/node/467126 on 24 July 2017). The species is restricted to the island groups of Kerguelen and Crozet in the southern Indian Ocean. It resembles a small female northern pintail. It was named after the English explorer and naturalist Alfred Edmund Eaton. It is threatened by introduced species, particularly feral cats, which prey on it. There are two subspecies: A. eatoni eatoni (Kerguelen pintail) and A. eatoni drygalskii (Crozet pintail). With ducklings, illustration by Keulemans, 1895

No narrative description available for this taxon yet.

02Traits & measurements

SourcesAmnioteDBAVONETEltonTraitsSeaLifeBase

Size & morphology14

Beak depth11.9 mm

Beak length (culmen)31.6 mm

Beak length (nares)24.3 mm

Beak width10.3 mm

Body mass841 g

⚠ sources differ — AmnioteDB: 841 g · AVONET: 945 g · EltonTraits: 945 g

Body mass (female)858 g

Body mass (male)928 g

Hand-wing index55.1

Kipp's distance112 mm

SVL57.5 cm

Secondary length91.4 mm

Tail length82.5 mm

Tarsus length27.5 mm

Wing length203 mm

Life cycle & reproduction9

Age at maturity (male)240 days

Age at sexual maturity240 days

Egg mass41.6 g

Fledging age45 days

Incubation22.5 days

Litter size7.5

Litters per year1 /year

Max. longevity329 months

Neonate mass28 g

Diet & foraging8

Ground30 %

Invertebrate20 %

Plant other50 %

Seed20 %

Trophic levelomnivore

Trophic nicheOmnivore

Vertebrate unknown10 %

Water around surface70 %

Habitat & environment6

HabitatWetland

Habitat saltwateryes

Habitat zoneothers

Migration3.0

Primary lifestyleAquatic

Range size7 506 km²

05DNA & barcodingmolecular

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 Anas eatoni has left across the world's sequence archives.

At a glance

06Genome at a glanceGoaT · NCBI

The complete instruction manual Anas eatoni 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

Genome size≈1 122 312 847 bp assembly estimate

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).

BACTERIUM Carsonella ruddii0.00016 Gb

FUNGUS0.04 Gb

INSECT0.25 Gb

THIS GENOME Anas eatoni1.12 Gb

HUMAN3.2 Gb

WHEAT17 Gb

FERN Tmesipteris160.45 Gb

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.

Assembly levelScaffold

08Occurrence & distribution

Record type319 records

Wild obs. + sensor308

Museum / vouchered11

Range

Area of Occupancy AOO296 km²

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

Coordinate accuracy43% within 1 km

≤1 km 3>10 km 4

7 georeferenced · 301 without coordinates

Open the mapobservation + sensor308

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.

Coordinate accuracy0% within 1 km

>10 km 8

8 georeferenced · 3 without coordinates

Open the institutions mapphysical evidence11

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

10Collections & institutions

Holding institutions1 of 2 geolocated

Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.

Institution	Specimens
Auckland, NZ	10
Museums Victorialocation not on record	1

2 institutions · 11 of 11 vouchered records shown

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