2006
Label: Colour Sounds Recordings - CSR 022 • Format: CDr Limited Edition • Country: US • Genre: Jazz • Style: Free Improvisation, Free Jazz

Birds get angry for many reasons, all of which are linked to their survival. The degree of anger and what makes birds upset can vary by season and by what local resources the bird has available, but the most common reasons for angry birds include the following:. Any bird species can show anger, but some birds have more volatile personalities than others. The birds that typically show the hottest tempers and lowest tolerance for disruptions include:.

Just like with humans, different individual birds can have different tolerances for anger and other emotions, and one bird may be far more easygoing than another under the same circumstances. When birds do get angry, Arroz Con Habichuelas - Owl Sounds* / Birds In The Meadow - Of Off Moon (CDr), they can show anger in several ways. Depending on the bird species and how effective each behavior is against the perceived threat, birds may use more than one angry behavior at a time to try to discourage intruders.

Birders who notice a bird's angry behavior can use those clues to learn more about what is going on. Birds that are mobbing one specific location, for example, may have spotted a predator such as a feral catperched hawk, or roosting owl. They may start calling in the winter. They will often respond to imitations of their calls.

In most of its range, the western screech owl nests in cavities in dead or live trees or stumps. In the Sonoran Desert, it may, like the whiskered screech owl, nest in cavities in saguaro cacti. Some of the cavities may be holes abandoned by woodpeckers or flickers. Other cavities may have formed at the rotted base of broken limbs. The western screech owl will also use nest boxes, especially in residential areas where potential nest trees have been cut down or trimmed for cosmetic reasons.

The female owl will lay two to eight white, rounded eggs. She does most of the incubating. The male brings food to her and the young. The incubation period lasts for about 26 days. Young birds make their first flight about 28 days after hatching. The young western screech owl, like the young of many other species of owls, is Arroz Con Habichuelas - Owl Sounds* / Birds In The Meadow - Of Off Moon (CDr) to climb back up a tree trunk if it happens to leave the nest prematurely.

The adults will continue to feed their young Arroz Con Habichuelas - Owl Sounds* / Birds In The Meadow - Of Off Moon (CDr) though they have left the nest. The adults defend their nest sites furiously, with continual dives, beak-snapping and general havoc.

One year I followed Rich Levad, then a retired English teacher, through the suburbs and agricultural lands of Grand Junction, Colorado, on a survey for western screech owls.

He and Tom Moran, a dentist, and several other birders initiated the survey after they had Arroz Con Habichuelas - Owl Sounds* / Birds In The Meadow - Of Off Moon (CDr) several of the birds during the annual, Audubon-sponsored Christmas Bird Count. Levad and Moran systematically searched habitats, playing taped owl calls.

They focused on areas with thick stands of cottonwoods, which often have natural cavities or woodpecker holes. They scouted residential areas and farmlands, as well. Though not all of these owls Arroz Con Habichuelas - Owl Sounds* / Birds In The Meadow - Of Off Moon (CDr) nesters, Levad and Moran deduced that they had found at least 18 breeding pairs.

The nest boxes allowed the birders to easily resurvey the sites to Arroz Con Habichuelas - Owl Sounds* / Birds In The Meadow - Of Off Moon (CDr) for activity. Even during the day, a western screech owl will show its face as it looks out its nest cavity. Using a ladder for access, the birders could easily lift the hinged lids of the nest boxes and check for nesting birds.

For sites with young, Moran and others would return when the birds were old enough and affix a U. These numbered bands, when relocated, could provide information about longevity or dispersal of the young. Levad recorded wing and beak measurements, weights and sex for each of the juvenile fuzz balls he banded.

Though the young were fairly docile, he reported that they still snapped their beaks and fluffed out their feathers to look as large and intimidating as possible. Occasionally, the birders discovered that American kestrels, woodpeckers or even wood ducks had appropriated the nest boxes.

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