Bird species’ community responses to land use in the suburbanizing Twin Cities, Minnesota, USA, were contrasted among reserves, rural lands, and suburbs. For each land use type, bird composition, diversity, and abundance were recorded for 2 years in 99 plots in three sampling units (each 4500 ha). A habitat gradient defined by canopy structure (grasslands to savannas to forests) was influenced ...

Demand for bioenergy is increasing, but the ecological consequences of bioenergy crop production on working lands remain unresolved. Corn is currently a dominant bioenergy crop, but perennial grasslands could produce renewable bioenergy resources and enhance biodiversity. Grassland bird populations have declined in recent decades and may particularly benefit from perennial grasslands grown for ...

conclusions abnormal eating attitude was notable among physical education students in tabriz, iran. it seems that some anthropometric indices such as bmi and central obesity indices were related to the increase of disordered eating attitude. background abnormal eating behavior, unhealthy weight control methods, and eating disordered symptoms have risen among college students. objectives the aim...

introduction there is an agreement that eating disorder is related to psychological characteristics and on the other hand, level of ghrelin hormone, intercellular adhesion molecule-1 (icam-1) and e-selection also change during eating disorders. we aimed to study the relationship between eating disorders and rest levels, icam-1, e-selection, and ghrelin hormone in obese people. materials and met...

abstract background: the prevalence of disordered eating behaviors has been reported to increase in recent decades; therefore, the search for specific psychological variables that may contribute to the etiology of this disorder is of great importance. the current study examined the mediating role of the emotion regulation difficulties on the relationship between body image disturbance and disor...

—Recent experiments support the longstanding hypothesis that Common Cuckoos (Cuculus canorus) are mimics of Eurasian Sparrowhawks (Accipiter nisus). Additional experiments further suggest that mimicry benefits the cuckoos by reducing the intensity of mobbing they suffer near host nests, at least in some host populations, potentially increasing their access to the hosts’ nests. We observed two s...

An 18-week-old umbrella cockatoo presented for continuous vocalization and one episode of regurgitation. The bird had been purchased 3 weeks before presentation and was the first large pet bird owned by this family. The cockatoo was fed a commercial baby bird formula that the owners were heating in the microwave before feeding. The owner had been instructed on formula feeding by the pet store p...

Abstract A simplified model of the bird skeleton along with elongation parameters for the flight feathers is used to explore the diversity of bird shapes. Varying the small number of parameters simulates a wide range of observed bird silhouettes. The model may serve to examine developmental factors involved in these forms, help museum curators develop computational approaches to bird morphometr...