Wind profiles from an operational C-band Doppler radar have been combined with data from a bird tracking radar to assess the wind profile quality during bird migration. The weather radar wind profiles (WRWPs) are retrieved using the well-known volume velocity processing (VVP) technique. The X-band bird radar performed range–height scans perpendicular to the main migration direction and bird den...

Introduction Environmental concerns in developing wind farms have been highlighted by both the wind-energy community and ecological experts [1–3] as the demand for wind power energy grows rapidly around the world to meet public policies for renewable energy. One of the primary concerns is the increase in bird mortality caused by collision with blades, loss of nesting and feeding grounds, and in...

this study was conducted to investigate the effect of bacillus subtilis and licheni formis on broiler breeder performance and gastrointestinal health of their progenies. a total of 336 broiler breeder hens (cobb 500) from 22 to 32 weeks of age were used in a completely randomized design of 2 × 2 factorial arrangement with four treatments, each with seven replicates. dietary treatments included:...

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 ...

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...

A. DEDOUSSI, I. GEORGOPOULOU, A. TSERVENI-GOUSSI AND A. YANNAKOPOULOS Department of Animal Production, Ichthyology, Ecology and Protection of the Environment, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki 541 24, Greece Department of Infectious and Parasitic Diseases, Avian Pathology and Pathological Anatomy, Faculty of Veterinary Medicine, Aristotle Univers...

Auditory expertise has mostly been studied in relation to musical processing, but expert auditory processing can also involve nonmusical auditory stimuli, such as birdsongs in bird experts. In this study, the neural correlates of bird expertise were investigated by using electroencephalography to measure auditory-evoked potentials in bird experts and novices. Auditory stimuli in three categorie...

Located on the northwest coast of Ross Island in McMurdo Sound, Cape Bird features virtually unweathered surface drift with erratics from the Transantarctic Mountains (TAM) and with enclosed marine shell fragments. This Cape Bird drift is cut by Holocene beaches. The chronology of drift deposition and beach formation comes from AMS radiocarbon dates of associated marine shells, and of penguin b...