Download or read book Acorn Utilization in the Acorn Woodpecker Melanerpes Formicivorous written by Nanette Louise Pratini and published by . This book was released on 1989 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Relationships in the Acorn Woodpecker Melanerpes Formicivorus written by Robert Chadwick Roberts and published by . This book was released on 1976 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Competition and Cooperation in the Communally Breeding Acorn Woodpecker melanerpes Formicivorus written by Ronald Lane Mumme and published by . This book was released on 1984 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Ecology of the Cooperatively Breeding Acorn Woodpecker MPB 24 Volume 24 written by Walter D. Koenig and published by Princeton University Press. This book was released on 2020-03-31 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the acorn woodpecker was observed and described by Spanish explorers, its behavior--particularly the unique habit of caching acorns in specialized storage trees or granaries--has impressed observers. Acorn woodpeckers are also one of the few temperate zone species in which young are reared communally in family groups. This demographic study investigates the complexities of acorn storage and group living in acorn woodpeckers at Hastings Reservation in central coastal California. It is one of the most thorough studies of any avian social system to date.

Download or read book Aspects of the Geographic Ecology of the Acorn Woodpecker Melanerpes Formicivorus written by Katherine Fortner Doerge and published by . This book was released on 1978 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population and habitat characteristics of Acorn Woodpeckers (Melanerpes formicivorus) were examined in oak stands (Quercus garryana) in Benton County, Oregon. Characteristics of eight oak stands not containing Acorn Woodpeckers were also examined. The data were used to determine which factors might be related to woodpecker presence and abundance within the northern extension of the range of this species. Population size varied from 2 to 8 individuals with a mean of 4.25 birds per group. All were resident populations with communal storage limbs for acorns which are used as a winter food. During winter months, birds were also observed flycatching and possibly ground-feeding and gleaning for food. Neither the area of the home rance nor the number of trees in the home range were significantly correlated to the number of woodpeckers living in an area. Rather, the number of dead limbs in the home range was the best single indicator of woodpecker number. The number of storage limbs was related to the number of dead limbs in the home range. Trees in oak stands containing Acorn Woodpeckers were larger, in diameter and had more dead limbs than trees in oak stands not containing woodpeckers. The density of trees in stands occupied by woodpeckers was lower than the density of unoccupied stands. These three factors are important to the availability of resources on which the Acorn Woodpeckers depend: acorns for winter food and dead limbs for storage and nesting. An hypothesis for the recent extension of the Acorn Woodpecker range into northern Oregon is that it is related to the development of oak forests in the Willamette Valley. Prior to settlement in the 1840's, oak savannas were maintained by periodic ground fires. The control of these fires after settlement has allowed the development of mature oak forests which provide suitable habitat for Acorn Woodpeckers.

Download or read book Ecological Correlates of Social Organization in a Communally Breeding Bird the Acorn Woodpecker Melanerpes Formicivorus written by Pepper Trail and published by . This book was released on 1980 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acorn Woodpecker written by and published by . This book was released on 1995 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movement Patterns and Nest Site Selection in the Cooperatively Breeding Acorn Woodpecker Melanerpes Formicivorus written by Philip Norman Hooge and published by . This book was released on 1989 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dispersal Dynamics of the Cooperatively Breeding Acorn Woodpecker written by Philip Norman Hooge and published by . This book was released on 1995 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Electrophoretic Analysis of Parternity in the Acorn Woodpecker Melanerpes Formicivorus written by Nancy Elaine Joste and published by . This book was released on 1983 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acorn utilization in the Acorn Woodpecker by Nanette Louise Pratini written by Nanette L. Pratini and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Annual Behavioral and Gonadal Cycle in the California Acorn Woodpecker Melanerpes Formicivorus written by Frank Shelton Trimble and published by . This book was released on 1967 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mobbing Behavior in the Cooperatively breeding Acorn Woodpecker Melanerpes Formicivorus written by Lauren Ashley Wilkerson and published by . This book was released on 2012 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Territoriality Feeding Behavior and Intestinal Helminths of the Acorn Woodpecker Melanerpes Formicivorus written by James V. MacMillan and published by . This book was released on 1967 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Causes and Consequences of Nestling Size Variation in the Cooperatively Breeding Acorn Woodpecker Melanerpes Formicivorus written by Mark Thomas Stanback and published by . This book was released on 1991 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of Vocal Communications in Cooperatively Breeding Acorn Woodpeckers Melanerpes Formicivorus written by Yuan Yao and published by . This book was released on 2008 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Demographic and Fitness Consequences of Delayed Dispersal in the Cooperatively Breeding Acorn Woodpecker written by Justyn T. Stahl and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Cooperative breeding in birds occurs when more than two individuals provide care for a single nest. In many species, the additional adults present are offspring from a previous year who have delayed dispersal, and provision young who are non-descendant kin. Delaying dispersal and age of first breeding can influence the demography and fitness of individuals, but the fitness and demographic consequences of helping behavior are poorly understood. Using long-term data (1972-2004), I examined the demographic and fitness consequences of helping behavior in acorn woodpeckers Melanerpes formicivorus. Using a multi-state capture-mark-recapture framework, I found that the apparent survival of breeders was higher than helpers, and the survival of males was higher than females. Juveniles were much more likely to become helpers rather than breeders following fledging, and helpers were more likely to remain helpers rather than becoming a breeder. Both survival and transition rates varied annually and were positively influenced by the acorn crop. For fitness estimation, I focused only on reproductive females who were banded as juveniles. Although helpers began reproduction significantly later and lived significantly longer than breeders, there was no significant difference in lifetime reproductive success or individual fitness between the two groups. However, birds that successfully bred at age 1 without helping had a significantly higher fitness than those who helped and successfully bred at age 2 or older. My results suggest that delayed dispersal and reproduction in the acorn woodpecker lead to a loss of fitness when conditions are favorable for successful reproduction. However, if constraints in the environment prevent an individual from breeding at age 1, helping is a viable option until reproduction is possible.