Red-naped Sapsucker

Red-naped Sapsucker
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Piciformes
Family: Picidae
Genus: Sphyrapicus
Species: S. nuchalis
Binomial name
Sphyrapicus nuchalis
Baird, 1858

The Red-naped Sapsucker (Sphyrapicus nuchalis) is a medium-sized woodpecker.

Contents

Habitat

Their breeding habitat is mixed forests in the Rocky Mountains and Great Basin areas of North America. They nest in a cavity in a dead tree. Other species which nest in tree cavities reuse nests formerly used by these birds.

Nest Site Selection

Throughout western North America, Red-naped Sapsucker (Sphyrapicus nuchalis) nests have been described primarily in trembling aspen (Populus tremuloides) with decay-softened wood. Heart-wood decay is reported to infect the roots of most aspens that red-naped sapsuckers choose to excavate for nesting.Red-naped Sapsucker's typically excavate their first cavity relatively close to the ground and over subsequent years make progressively higher excavations.[2] Most (68%) nest trees were live and 75% had broken tops. Western larch (Larix occidentalis) and birch were greatly over utilized compared to their availability.

Description

This species measures 19–23 cm (7.5–9.1 in) long and weighs 32–66 g (1.1–2.3 oz).[3] Adults have a black head with a red forehead, white stripes, and a red spot on the nape; they have a white lower belly and rump. They have a yellow breast and upper belly. They are black on the back and wings with white bars; they have a large white wing patch. Adult males have a red throat patch; for females, the lower part of the throat is red, the upper part white.

These birds migrate south and vacate areas at higher elevations.

True to their name, and like other sapsuckers, they drill holes in trees and eat the sap as well as insects attracted to it. They sometimes catch insects in flight; they also eat seeds and berries.

This bird used to be considered a subspecies of the Yellow-bellied Sapsucker.

Nesting

Red-naped sapsuckers typically lay 3-7 white eggs.[4] The young are altricial, naked, and helpless. The eggs are incubated for 12-13 days and the young are able to fly and leave the nest after 25-29 days of hatching.[5]

Habitat Sustainability

To provide habitat and foraging for woodpeckers, forest management objectives on public land include snag and live tree retention. Numerous studies have shown woodpeckers will readily nest in logged areas as long as some stands are left standing. The drastic change in forest habitat cause by logging and tree retention drastically effects the quality of nesting sites and is detrimental to the red-naped sapsuckers habitat.[6]

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References

  1. ^ BirdLife International (2009). "Sphyrapicus nuchalis". IUCN Red List of Threatened Species. Version 2010.4. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/141658. Retrieved 01 April 2011. 
  2. ^ Daily, Gretchen (December 1993). "Heartwood Decay and Vertical Distribution of Red-Naped Sapsucker Nest Cavities". The Wilson Bulletin 105 (4): pp. 674-679. http://www.jstor.org/stable/4163359. Retrieved 4 December 2011. 
  3. ^ [1] (2011).
  4. ^ "All About Birds". The Cornell Lab of Ornithology. http://www.allaboutbirds.org/guide/Red-naped_Sapsucker/id. Retrieved 5 December 2011. 
  5. ^ "Red-naped Sapsucker". Bird-Web. http://www.birdweb.org/birdweb/bird/red-naped_sapsucker. Retrieved 5 December 2011. 
  6. ^ Tobalske, Bret (May 1992). "Evaluating habitat sustainability using relative abundance and fledging success of red-naped sapuckers". The Condor 94 (2): 550-553. http://www.jstor.org/pss/1369234. Retrieved 5 December 2011. 

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