Newsletter / Blog
2012-03-23 What is the only bird known to go into topor?
The Common Poorwill is the only bird known
to go into topor for extended periods – Weeks to months.
The Common
Poorwill - Phalaenoptilus nuttallii - is a nocturnal bird in the
nightjar family. It is found from British Columbia
and southeastern Alberta, through the western United States to northern Mexico. The
bird's habitat is dry, open areas with grasses or shrubs, and even stony desert
slopes with very little vegetation.
Description
The sexes are
similar. Common Poorwills are mottled gray and brown with a white band across
the chest and a pale collar around the neck. The upperparts vary from dark
brown to light gray. The outer tail-feathers are tipped with white, the
markings slightly more prominent in the male. It is a small sized nightjar,
with a large head, short neck, short bill, rounded wings with tips that reach
the end of the short tail at rest, and pale grey coloration.
Call
A monotonous poor-will
given from dusk to dawn and a chuck note in flight.
Food
It feeds on
nocturnal insects such as moths, beetles and grasshoppers. These nocturnal
birds hunt from the ground, looking up into the sky and flying up to grab prey.
Breeding
Breeding is from
March to August. The nest is a shallow scrape on the ground. Clutch size is normally
2 creamy white eggs. Both sexes incubate for 20 to 21 days to hatching, with
another 20 to 23 days to fledging.
Conservation Status – Least concern
This cryptic
species is very difficult to survey accurately, although recent studies show it
to be more abundant in many places than was previously thought. It is
widespread, and numbers are probably stable, although more study is needed to
get a better sense of the population status.
Birdwatching
Common Poorwills
are very difficult to see but are common in canyons and shrubby areas at the
ecotone where the Ponderosa pine forests and shrub-steppe habitats meet in
eastern Washington
from late April through August. They can also be found in mountainous sagebrush
habitat and in the Columbia
Basin. Migrants have been
recorded in western Washington
as well but are extremely rare.
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