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Until the advent of electronic tagging technology, the inherent difficulty of studying swift and powerful marine animals made ecological information about sharks of the family Lamnidae difficult to obtain. Here we report the tracking of movements of white sharks by using pop-up satellite archival tags, which reveal that their migratory movements, depth and(More)
Proximal climatic and lunar effects on amval and departure of nocturnal migrant landbirds at Southeast Farallon Island (SEFI), California, were examined using multivariate and univariate statistics. Predictive models including date, weather and lunar variables were developed for both spring and fall, which accounted for 33-40°/o of variation in amval totals(More)
The growing trend toward the collection of exotic snakes by private collectors increases the likelihood that emergency physicians will face the challenge of treating an exotic envenomation. We report a case involving a professional reptile handler who sustained an extremity bite from a king cobra (Ophiophagus hannah ). Rapid, progressive neurotoxicity(More)
—We document the molt sequence of flight feathers in Turkey Vultures (Cathartes aura) based on studies of captive and wild birds, and examination of museum specimens. We found an unusual pattern of primary replacement, which appears to be a modified form of Staffelmauser, or stepwise wing molt. A Staffelmauser-like strategy for replacement of the(More)
--We examined the independent effects of age and breeding experience on reproductive success in Western Gulls (Larus occidentalis) 3-9 years old. Both factors ignificantly enhanced success after the other factor had been statistically controlled. When the sexes were analyzed separately, previous breeding experience had a significant influence on success of(More)
Understanding bird migration and dispersal is important to inform full life-cycle conservation planning. Stable hydrogen isotope ratios from feathers (δ2Hf) can be linked to amount-weighted long-term, growing season precipitation δ2H (δ2Hp) surfaces to create δ2Hf isoscapes for assignment to molt origin. However, transfer functions linking δ2Hp with δ2Hf(More)
—We describe the number of inserted molts in the annual molt cycle and topographies resulting from the preformative molt in 10 Neotropical forest passerine species. Seven species showed two annual molt peaks, one in early spring (Mar–Apr) and one in late summer (Jul–Sept). The spring molt consisted of a light replacement of body feathers in ,20% of(More)