Sturnella militaris
(Linnaeus, 1758) · speciesAt a glance
Sources6 archives
Databases and archives Sturnella militaris's data was compiled from.
Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
The red-breasted meadowlark (Leistes militaris) is a passerine bird in the New World family Icteridae. It was formerly named red-breasted blackbird but is not closely related to the red-winged blackbird group. The red-breasted meadowlark is resident from south-western Costa Rica, which it has recently colonised, and Trinidad, south to north-eastern Peru and central Brazil. In 2008, it was sighted for the first time in Nicaragua. Like other meadowlarks, it is a bird associated with open country, including moist grasslands, pasture and cultivation, preferably with the odd bush or fence post for males to use as a songpost. In display the male flies up to 10 m in the air, then parachutes down on folded wings whilst singing a wheezing song, ti-ti-pee-pee-KWAAAAAA. The call is a short tsip. The red-breasted meadowlark builds a deep grass-lined open cup nest on the ground amongst tall grasses, with several nests often close together. The normal clutch is two to four reddish brown-blotched cream eggs. The red-breasted meadowlark is a small icterid, 19 cm long and weighing 40 –. Males are larger than females. The male has mainly black plumage, apart from a bright red throat, belly and wing epaulets. This striking "redcoat" plumage gives rise to the specific name militaris and the Trinidadian name "soldier bird". The female has buff edged dark brown upperpart feathers, buff underparts with a reddish tinge, and pale streaks through the crown and eye. Juveniles resemble the female, but are paler and lack the reddish tint to the underparts. This species is very closely related to the white-browed meadowlark, S. superciliaris which breeds further south, and was formerly considered to be subspecies of red-breasted meadowlark. The male white-browed is easily distinguished by his bright white supercilium, but females of the two species are almost identical. Female red-breasted meadowlarks are longer billed, smaller, and shorter winged than their relative, with more red and less streaking on the underparts. This gregarious bird feeds mainly on insects and some seeds, including rice, and forages on the ground like a bobolink. The red-breasted meadowlark has benefited from the more open habitat created by forest clearance and ranching, and is extending its range. It is uncertain whether sightings on Tobago represent a small breeding population or wanderers from Trinidad or South America.
No narrative description available for this taxon yet.
Size & morphology13
Life cycle & reproduction2
Diet & foraging7
Habitat & environment4
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 Sturnella militaris has left across the world's sequence archives.
At a glance
The complete instruction manual Sturnella militaris 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.
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.
2n 762×GoaT · Bird Chromosome Database
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 type1 907 records
Origin
Range
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.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions13 of 25 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Chicago, US | 83 |
| Louisiana State University, Museum of Zoologylocation not on record | 44 |
| Philadelphia, US | 28 |
| New Haven, US | 20 |
| Moore Laboratory of Zoology, Occidental Collegelocation not on record | 18 |
| Washington, US | 16 |
| Ann Arbor, US | 14 |
| Berkeley, US | 11 |
| Ohio State University - Bird Division, Columbus, OH (OSUM)location not on record | 9 |
| Pontificia Universidad Javeriana (PUJ)location not on record | 7 |
| Toronto, CA | 4 |
| Universidad del Valle (UniValle)location not on record | 4 |
| Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH)location not on record | 3 |
| Central Michigan University Museum of Cultural and Natural Historylocation not on record | 3 |
| München, DE | 3 |
| Vancouver, CA | 2 |
| Universidad Nacional de Colombia (UNAL)location not on record | 2 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 2 |
| Universidad Tecnológica del Chocó (UTCH)location not on record | 1 |
| PROMIGAS S.A. E.S.P. (Promigas)location not on record | 1 |
| The University of the West Indies, Trinidad and Tobagolocation not on record | 1 |
| Ithaca, US | 1 |
| Zografou, GR | 1 |
| US | 1 |
| Edmonton, CA | 1 |
Where the DNA of Sturnella militaris 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.





