(Genus updated to Dryobates) |
(→Subspecies: Genus change) |
||
| Line 17: | Line 17: | ||
====Subspecies==== | ====Subspecies==== | ||
There are 8 subspecies<sup>[[#References|[1]]]</sup>: | There are 8 subspecies<sup>[[#References|[1]]]</sup>: | ||
| − | *'' | + | *''D. s. cactophilus'': |
:*Arid south-western [[US]] to north-eastern Baja California and central [[Mexico]] | :*Arid south-western [[US]] to north-eastern Baja California and central [[Mexico]] | ||
| − | *'' | + | *''D. s. eremicus'': |
:*Northern Baja California | :*Northern Baja California | ||
| − | *'' | + | *''D. s. lucasanus'': |
:*Southern Baja California | :*Southern Baja California | ||
| − | *'' | + | *''D. s. graysoni'': |
:*Tres Marías Islands (off western Mexico) | :*Tres Marías Islands (off western Mexico) | ||
| − | *'' | + | *''D. s. sinaloensis'': |
:*Coastal western Mexico (southern Sonora to Guerrero, south-western Puebla, western Oaxaca) | :*Coastal western Mexico (southern Sonora to Guerrero, south-western Puebla, western Oaxaca) | ||
| − | *'' | + | *''D. s. scalaris'': |
:*Southern Mexico (Veracruz and Chiapas) | :*Southern Mexico (Veracruz and Chiapas) | ||
| − | *'' | + | *''D. s. parvus'': |
:*North Yucatán Peninsula, Cozumel Island and Holbox Island | :*North Yucatán Peninsula, Cozumel Island and Holbox Island | ||
| − | *'' | + | *''D. s. leucoptilurus'': |
:*[[Belize]], [[Guatemala]] and [[El Salvador]] to north-eastern [[Nicaragua]] | :*[[Belize]], [[Guatemala]] and [[El Salvador]] to north-eastern [[Nicaragua]] | ||
Revision as of 07:46, 24 April 2019
|
This article is incomplete. This article is missing one or more sections. You can help the BirdForum Opus by expanding it. |
|
- Dryobates scalaris
Picoides scalaris; Dendrocopos scalaris; Picus scalaris
Identification
16.5 to 19 cm (6½ to 7½ inches) in length
Black and white, barred pattern on back and wings. Rump, breast and flanks speckled with black.
Adult males have a red crown patch that is smaller in immatures and lacking in adult females. The bill is very sharp, straight, and black.
Distribution
South-western United States, Mexico, and Nicaragua.
Taxonomy
Placed in genus Dryobates by Gill and Donsker.
Subspecies
There are 8 subspecies[1]:
- D. s. cactophilus:
- D. s. eremicus:
- Northern Baja California
- D. s. lucasanus:
- Southern Baja California
- D. s. graysoni:
- Tres Marías Islands (off western Mexico)
- D. s. sinaloensis:
- Coastal western Mexico (southern Sonora to Guerrero, south-western Puebla, western Oaxaca)
- D. s. scalaris:
- Southern Mexico (Veracruz and Chiapas)
- D. s. parvus:
- North Yucatán Peninsula, Cozumel Island and Holbox Island
- D. s. leucoptilurus:
- Belize, Guatemala and El Salvador to north-eastern Nicaragua
Habitat
Dry brushy areas and thickets.
Behaviour
Breeding
They nest in cavities excavated from tree trunks. 2 and 7 plain white eggs are laid and incubated by both sexes.
Diet
Diet includes insects and their larva, and also fruit produced by cacti.
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Avibase
Recommended Citation
- BirdForum Opus contributors. (2024) Ladder-backed Woodpecker. In: BirdForum, the forum for wild birds and birding. Retrieved 16 April 2024 from https://www.birdforum.net/opus/Ladder-backed_Woodpecker
