Clarión wren

The Clarión wren (Troglodytes tanneri) is a species of bird in the family Troglodytidae. It is endemic to Clarión Island off Pacific Mexico.

Clarión wren
Conservation status
Vulnerable  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Troglodytidae
Genus:	Troglodytes
Species:	T. tanneri
Binomial name
Troglodytes tanneri Townsend, 1890

It looks much like a house wren but is larger with a prominently longer bill, somewhat approaching the Carolina wren in form.[2]

Its natural habitats are the less arid patches of shrubland,[1] notably thickets of Ipomoea halierca morning glory.[2] It also appears to occur in the garrison buildings and garden at Sulfur Bay,[1] but usually avoids the rocky shores and other exposed areas. In dense undergrowth, territories are some 10 meters (30–40 ft) in diameter.[2]

In late March 1953, males were found to be singing and threatening intruding competitors. Egg laying takes place between mid-March and mid-April.[2]

The eggs are similar to those of the house wren, but larger and more elongated. They measure approximately 20×14 mm and also are colored basically like those of house wrens but with fewer and crisper markings noticeably denser at the blunt end.[2]