O estado de Mato Grosso do Sul, privilegiado pela ocorrência dos biomas Pantanal, Cerrado, Mata Atlântica e Chaco, sendo este último limitado ao município Porto Murtinho, tem se constituído como espaço ímpar para a atividade observação aves. Atividade relativamente recente no estado, vem destacando possibilidade exploração ecoturismo. Prática consolidada mundo nacionalmente, o acolhe observador...

Las áreas naturales protegidas representan la principal estrategia de conservación biodiversidad. Sin embargo, sólo el 12.93% del territorio nacional se encuentra bajo protección legal. En este escenario surge necesidad encontrar alternativas para Los agroecosistemas (ecosistemas manejo antropogénico) pueden ser una alternativa conservación, debido a su potencial hábitats productivos algunas es...

Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne zoonotic agent that is maintained in nature in an enzootic vertebrate-tick-vertebrate cycle. Hyalomma genus ticks have been implicated as the main CCHFV vector and are key in maintaining silent endemic foci. However, what contributes to their central role in CCHFV ecology is unclear. To assess the significance of host preferences of ...

J. V. REMSEN JR.1, F. GARY STILES2 & JIMMY A. MCGUIRE3 1Museum of Natural Science & Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, USA. E-mail: [email protected] 2Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia 3Museum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, C...

THE MEIGLYPTINI COMPRISE EIGHT SPECIES GROUPED INTO THREE GENERA: Meiglyptes and Mulleripicus, with three species each, and Hemicircus, with two species. The aim of the present study was to describe the cranial osteology of six species and three genera of Meiglyptini and to compare them to each other, as well as with other species of woodpeckers and other bird groups. The cranial osteology vari...

-Mountain White-crowned Sparrows (Zonotrichia leucophrys oriantha) winter in Mexico and often arrive in the vicinity of their breeding grounds in the Sierra Nevada well before nesting is possible. Arrival at Tioga Pass, Califomia (elevation 3,030 m), usually occurs in early May, but residual winter snow and adverse weather can delay nesting for weeks. We used radiotelemetry to determine whether...

--Observations of Rock Dove foraging behavior and estimates of individual vigilance indicate increased benefits for those birds in the center of the flock relative to those individuals on the periphery. Additional observations of reaction distances and responses to an approaching human also show increasing benefits for central Rock Doves as flock sizes become larger. Benefits to those birds on ...