Black-striped sparrow

Black-striped sparrow
At Cordillera de Talamanca, Costa Rica
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Emberizidae
Genus:	Arremonops
Species:	A. conirostris
Binomial name
Arremonops conirostris (Bonaparte, 1850)

The black-striped sparrow (Arremonops conirostris) is a passerine bird which breeds from northern Honduras to western Ecuador, northern Brazil and Venezuela.

This American sparrow is a common bird in humid lowlands and foothills up to 1,500 m (4,900 ft) altitude, in semi-open habitats such as thickets, young second growth, overgrown fields and shady plantations and gardens.

The large domed nest, built by the female, is made of coarse plant material and has a wide side entrance. It is normally placed less than 1 m (3.3 ft) up in dense growth, but may be as high as 1.8 m (5.9 ft). The clutch is two, rarely three, unmarked white eggs, which are incubated by the female alone for 12–14 days before hatching.

The black-striped sparrow is a mainly terrestrial species, 16.5 cm (6.5 in) long and weighing 37.5 g (1.32 oz). The adult is distinctive, with a grey head which has broad black stripes each side of the crown and narrower black stripes through each eye. The upperparts are olive, with yellow on the bend of the wing. The underparts are dull white shading to grey on the breast sides and to olive on the lower belly. Young birds have brown stripes on a yellower head, brownish-olive upperparts and yellow-olive underparts.

This species resembles the olive sparrow, but is larger, and the ranges do not overlap. There are seven subspecies:

• A. c. richmondii – Ridgway, 1898: breeds in Central America south to western Panama. It is smaller and brighter than nominate conirostris.
• A. c. striaticeps – (Lafresnaye, 1853): breeds from central Panama to western Ecuador. It is whiter below than nominate conirostris or richmondii.
• A. c. viridicatus – Wetmore, 1957: breeds on Isla de Coiba, Panama. It is greyer on the head, breast and flanks than striaticeps.
• A. c. inexpectatus – Chapman, 1914: breeds in part of western Colombia. It is small, dull, and brownish-olive above
• A. c. conirostris – (Bonaparte, 1850): nominate, breeds in most of northern South America.
• A. c. umbrinus – Todd, 1923: breeds in the Maracaibo basin of northern Colombia and Venezuela. It is another small, dull race, but brighter above and slightly larger than inexpectatus
• A. c. pastazae – Krabbe & Stejskal, 2008: found in eastern Ecuador

The black-striped sparrow has a metallic churk call. The male’s song, given from the ground or a low perch, consists of a whistles and slurred notes, tsweet-tsweet tsweet-tswee ti-ti-ti, followed by a trill, but varies geographically.

The black-striped sparrow feeds on insects, spiders and seeds taken on the ground, and also picks berries and invertebrate prey from low bushes. It is seen in pairs, never in flocks, and is a shy and retiring species.

References

• Byers, Clive; Olsson, Urban; Curson, Jon (2013). Buntings and Sparrows: A Guide to the Buntings and North American Sparrows. Christopher Helm. ISBN 978-1408189061.
• Stiles, F. Gary; Skutch, Alexander F. (1989). A Guide to the Birds of Costa Rica. Comstock Publishing Associates. ISBN 0-8014-9600-4.
• Hilty, Steven L. (2003). Birds of Venezuela. Princeton University Press. ISBN 0-7136-6418-5.

External links

• "Black-striped sparrow media". Internet Bird Collection.
• Black-striped sparrow photo gallery at VIREO (Drexel University)
• Black-striped sparrow species account at Neotropical Birds (Cornell Lab of Ornithology)
• Interactive range map of Arremonops conirostris at IUCN Red List maps
• Audio recordings of Black-striped sparrow on Xeno-canto.