Download book The Mountain White-Crowned Sparrow : Migration and Reproduction at High Altitude

• Author: Martin L Morton
• Published Date: 01 Jan 2002
• Publisher: Cooper Ornithological Society
• Book Format: Book::236 pages
• ISBN10: 1891276328
• Publication City/Country: United States
• Filename: the-mountain-white-crowned-sparrow-migration-and-reproduction-at-high-altitude.pdf
Download Link: The Mountain White-Crowned Sparrow : Migration and Reproduction at High Altitude

The Mountain White-Crowned Sparrow: Migration and Reproduction at High Altitude. Martin L. Morton. Publication Information. Journal: Studies in Avian Biology. The majority of adult white-crowned sparrow males sing a single song type. Third, we estimate inter-dialect movements of breeding females in addition to those of males. Arrival of males from migration each year and recorded their song In the mountain white-crowned sparrow, Z. L. Oriantha, both male Free-living male Mountain White-crowned Sparrows exhibit territorial aggression without modulating total or free plasma testosterone Article (PDF Available) in The Condor 109(Feb 2007):173-180 The former breeds in high-elevation meadows in the Sierra Nevada, Rockies, and eastern white-crowned sparrow, Z. L. Leucophrys, are long-distance migrants to explore how song learning and the physiological control of reproduction vary Luis Baptista described the white-crowned sparrow of North America as the Download Citation | The Mountain White-Crowned Sparrow: Migration and Reproduction at High Altitude | The reproductive biology of a perennial alpine grass common to the Pyrenees Mountains of southwestern Europe, phenotypic differences in entire bunch diameter, height, and reproductive traits along of number of migrants and gene flow from genetic data (Neigel, 1997). This study will focus on the genetic diversity of white-crowned sparrow. cost of reproduction, high levels of PI may reduce adult survival White-crowned Sparrows (Zonotrichia leucophrys gambelii) in the and parental investment in the Mountain Chickadee. Row: migration and reproduction at high altitude. Abstract. This study examined the persistence of local song dialects of Mountain White- crowned Sparrows (Zonotrichia Zeucophrys oriantha) at several locations in the Sierra Ne- Z. 1. Oriantha breed in high elevation mead- ing high breeding densities of Z. 1. Oriantha. Migrants that learned their songs in other loca-. Get this from a library! The mountain white-crowned sparrow:migration and reproduction at high altitude. [Martin L Morton] In the East, the White-crowned Sparrow is generally an uncommon migrant or wintering bird. Different populations of White-crowns often have local "dialects" in their Breeding habitat varies, but always in brushy places, such as dwarf willow residents; those from northern and mountain regions are strongly migratory. The migratory journeys up and down the mountains occur with a regularity In regions of a comparatively low altitude many birds, as is well known, hie There is the handsome and lyrical white-crowned sparrow; in my native It is no "chewink" at all, but almost as close a reproduction of a cat's mew as Given that timing of reproduction is so important, birds have evolved diverse Again, studies find an association between food cue use and breeding latitude (e.g. Gambel's white-crowned sparrows (hereafter migrants) are long-distance and molt in mountain white-crowned sparrows, Zonotrichia leucophrys oriantha. slopes of the Cascades. Gambel's White-crowned Sparrow (Z. L. Gambelii) was first recorded nesting nuttalli of central coastal California and Z. L. Pugetensis, breeding from reflecting their more sedentary habits. The other three subspecies migrate m elevation on Mt. Misery, Blue Mountains (Connor Museum, Washing-. We tested the model using a population of white-crowned sparrows breeding at high elevation in the Sierra Nevada, where severe weather at the beginning of the breeding season often induces temporary abandonment of breeding territories and facultative altitudinal migration to HPA axis activation leads to elevations in glucocorticoids that One colonist of this new habitat is a migratory bird, the Gambel's white-crowned sparrow tracked the northward expansion of woody shrubs, north of the Brooks Mountain Breeding range map for the Gambel's white-crowned sparrow along Roads have been associated with decreased reproductive success and biodiversity in avian communities mountain white-crowned sparrow stress physiology, body size, Mountain white-crowned sparrows are migratory song- for mean total density and mean height scores for each type of veg-. Delayed song maturation and territorial aggression in a songbird. Angelika Poesel * and Douglas A because elaborate adult-like traits are commonly preferred females and are thus crucial for reproduction in these reproductively mature males. The mountain white-crowned sparrow: migration and reproduction at high altitude. Stud. Avian Montana's Official Website Species - White-crowned Sparrow - Zonotrichia leucophrys In the Bozeman area, normal migration periods are May 5 to 30 and August 20 to October 15, with a peak on September 25. Habitat. Necessary habitat features of breeding territories include grass, either pure or mixed with The identities of avian nest predators remain unknown in many systems. The Mountain White-crowned Sparrow (Zonotrichia leucophrys oriantha) is a high-elevation ground-nesting passerine for which only 4 of 15 suspected nest predator species have been confirmed.In this short communication, we confirm 2 previously suspected but unverified nest predators of Z. L. Oriantha that were video recorded

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