Picoides scalaris

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Aves
Subclassis: Carinatae
Infraclassis: Neornithes
Parvclassis: Neognathae
Ordo: Piciformes
Familia: Picidae
Subfamilia: Picinae
Genus: Picoides
Species: Picoides scalaris
Subspecies P. s. cactophilus - P. s. eremicus - P. s. graysoni - P. s. lambi - P. s. leucoptilurus - P. s. lucasanus - P. s. parvus - P. s. scalaris - P. s. sinaloensis - P. s. soulei

Name

Picoides scalaris (Wagler, 1829)

References

* Isis, oder Encyclopädische Zeitung 22 col.511

Vernacular names
Deutsch: Texasspecht
English: Ladder-backed Woodpecker
Français: Pic arlequin
日本語: シマアカゲラ
Suomi: Meksikonkirjotikka

The Ladder-backed Woodpecker (Picoides scalaris) is a North American woodpecker.

Range and habitat

The Ladder-backed Woodpecker is fairly common in dry brushy areas and thickets and has a rather large range. The species can be found year-round over the southwestern United States (north to extreme southern Nevada and extreme southeastern Colorado), most of Mexico, and locally in Central America as far south as Nicaragua.

Description

The Ladder-backed Woodpecker is a small woodpecker about 16.5 to 19 cm (6½ to 7½ inches) in length. It is primarily colored black and white, with a barred pattern on its back and wings resembling the rungs of a ladder. Its rump is speckled with black, as are its cream-colored underparts on the breast and flanks. Southern populations have duskier buff breasts and distinctly smaller bills. Adult males have a red crown patch that is smaller in immatures and lacking in adult females. The Ladder-backed Woodpecker is very similar in appearance to Nuttall's Woodpecker, but has much less black on its head and upper back, and the range of the two species only intersects a minimal amount in southern California and northern Baja California. Hybrids are known.
Comparison of Ladder-backed (above) and Nuttall's Woodpeckers

Ladder-backed Woodpeckers nest in cavities excavated from tree trunks, or in more arid environments a large cactus will do. The female lays between 2 and 7 eggs, which are plain white. The eggs are incubated by both sexes, but the nesting period and other details are unknown.

Like most other woodpeckers the Ladder-backed Woodpecker bores into tree-trunks with its chisel-like bill to hunt for insects and their larva, but it also feeds on fruit produced by cacti.

References

* BirdLife International (2004). Picoides scalaris. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
* Howell, Steve N. G.; Sophie Webb (1995). A Guide to the Birds of Mexico and Northern Central America. Oxford University Press. ISBN 0-19-854012-4.