By Edward C. Beedy, Edward R. Pandolfino
This superbly illustrated and simple e-book provides the main up to date details to be had in regards to the typical histories of birds of the Sierra Nevada, the origins in their names, the habitats they like, how they impart and engage with each other, their relative abundance, and the place they ensue in the zone. each one species account gains unique illustrations through Keith Hansen.
In addition to characterizing person species, Birds of the Sierra Nevada additionally describes ecological zones and fowl habitats, contemporary tendencies in populations and levels, conservation efforts, and greater than one hundred sixty infrequent species. it is usually a word list of phrases, precise maps, and an intensive bibliography with over 500 citations.
Read Online or Download Birds of the Sierra Nevada: Their Natural History, Status, and Distribution PDF
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Additional info for Birds of the Sierra Nevada: Their Natural History, Status, and Distribution
Flocks of Pine Siskins, Red Crossbills, or Evening Grosbeaks may fly overhead. Open areas with shrubs, wildflowers, and grasses draw Dark-eyed Juncos, Chipping Sparrows, and Cassin’s Finches that search the ground for insects and seeds. Some “edge” species such as Mountain Quail and “Mountain” White-crowned Sparrows use trees and shrubs for cover but feed in open areas nearby. indd 15 15 1/30/13 3:11 AM as darkness comes, the incessant tooting of Northern Saw-whet Owls. Mountain Chaparral North 4,500 to 8,500 feet; South 5,000 to 9,500 feet Brushfields of huckleberry oak, greenleaf manzanita, snowbrush, or chinquapin occupy steep, rocky slopes or forest clearings created by treefalls, logging, or fire.
Grazing of mountain meadows degraded these habitats and must have reduced habitat for Willow Flycatchers, Yellow Warblers, and Lincoln’s Sparrows. Gold-mining degraded streamside habitats for riparian-associated birds, including a diversity of migrating neotropical songbirds such as flycatchers, vireos, warblers. Changes in public attitudes about nature and wildlife over the past few decades have eliminated or modified most of these historically damaging practices, and state and federal agencies are now tasked with managing public lands and wildlife resources using science-based approaches that help protect and enhance habitat for Sierra birds.
RANGE EXPANSIONS A number of species have either expanded their range into or within the Sierra in recent decades. Since the first Great-tailed Grackles crossed the Colorado River in the 1960s, they have spread rapidly through California. While still largely confined to lower-elevation areas on both slopes, numbers and range within the Sierra increase each year. indd 32 the grackle expansion was as rapid as any could be, but the spread of the Eurasian CollaredDove has proceeded with truly breathtaking speed.