USFWS, Albuquerque, NM. Fish and Wildlife Service (Service) completed a positive 90-day finding on September 18, 2015.

While they eat a diversity of prey, the majority of their diet consists of a few key species: northern flying squirrels (at higher elevations) and woodrats (at lower elevations).

Ganey and Balda (1994) found that, in northern Arizona, owls generally foraged slightly more than expected in unlogged forests, and less so in selectively logged forests.

2009. Spotted owls do not typically nest every year, and nesting is highly dependent on weather conditions prior to and during the breeding season.The California spotted is continuously distributed throughout the forests of the western Sierra Nevada mountains, from Shasta County south to the Tehachapi Pass. Specializes on small forest mammals, including woodrats, deer mice, voles, red tree mice (Phenacomys), small rabbits, bats.

The owl itself seems anything but fierce: it has a gentle look, and it preys mostly on small mammals inside the forest.

California spotted owls generally inhabit older forests that contain structural characteristics necessary for nesting, roosting, and foraging.

Available at http://www.nbii. Incubation is by female only, 28-32 days. Male and female Mexican spotted owls are similar in appearance— brown with irregular brown and white spots on the abdomen, back, and head.

The spotted owl is similar in appearance to the The northern spotted owl has a nearly contiguous range from southwestern Spotted owls occur in a variety of hardwood and coniferous forest habitats, although the species prefers closed-canopy, uneven-aged, late-successional, and old-growth forests. Just north of Lassen Peak to south of the Pit River, the range of California spotted owl transitions into that of the northern spotted owl.Although predation is not a strong driver of spotted owl populations, some predators can include great horned owls, northern goshawks, and red-tailed hawks.Long-term studies of California spotted owls in National Forests indicate that the populations are in decline.

A prominent emerging stressor for California spotted owl is the southern expansion of the barred owl, which has been a significant stressor for the northern spotted owl within its range. The Endangered Species Act requires federal agencies to ensure that activities they authorize, fund, or carry out are not likely to destroy or negatively alter critical habitat.Fletcher, K. W. and H.E.

Fish and Wildlife Service. Unlike most owls, Mexican spotted owls have dark eyes. Some juveniles remained in forests similar to typical owl breeding habitat. The owl itself seems anything but fierce: it has a gentle look, and it preys mostly on small mammals inside the forest. Its deep hooting calls carry far on still nights, especially in southwestern canyons where they may echo for more than a mile. Black eyes, unlike most other owls; main confusion species is Barred Owl. In the northern portion of the range (southern Utah and Colorado), most nests are in caves or on cliff ledges in steep-walled canyons. The Northern Spotted Owl is getting a new level of protection across hundreds of miles of its range. Very little is known of the owl’s range and distribution in Mexico.Mexican spotted owls nest, forage, roost, and disperse in a wide variety of biotic communities:Nesting habitat is typically in areas with complex forest structure or rocky canyons, and contains mature or old growth stands which are uneven-aged, multistoried, and have high canopy closure.

Whitish.

The Mexican spotted owl has the largest geographic range of the three subspecies.

Visit your local Audubon center, join a chapter, or help save birds with your state program.Audubon protects birds and the places they need, today and tomorrow. Within an owl territory, spatial heterogeneity to some degree is important for foraging habitat.

How Climate Change Will Reshape the Range of the Spotted Owl Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect this bird’s range in the future. Data are suitable for direct input to GIS software that can analyze its meaning in the scientific, engineering, or business context for which the data were created.Providing information and assistance to Congressional offices, other agencies, media outlets, and the general public about Service activities.The California spotted owl has been petitioned for listing and is currently under review. They may leave the roost during day to capture prey beneath their roost, retrieve cached prey, or to drink or bathe in a stream.The average actual life expectancy for Mexican spotted owls in the wild is about 15 years.Owls forage primarily at night, starting at sunset and continuing until just before sunrise. About ¾ of known California spotted owl locations are on public lands (e.g., National Forests), with the remaining on private timberlands.Spotted owls form monogamous pairs, and each pair defends a territory surrounding a nesting and/or roosting site.

Available http://www.natureserve. Breeding typically begins in mid-February, and the female lays an average of two eggs. The spotted owl has an average length of 43 cm (17 in), wingspan of 114 cm (45 in), and weight of 600 g (1.3 lb). Version 7.1.

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