The number of species varies greatly among taxa. In birds, for example, the parvorder Passerida contains 3556 species while the Odontophorida contains only six species. This uneven distribution of species among bird groups is not a consequence of random branching patterns and therefore warrants an explanation. According to the behavioural drive hypothesis, behavioural innovation coupled with so...

Populations of many grassland birds in North America have declined significantly during the last 30 years (Knopf 1994, Peterjohn and Sauer 1999). Although population trends of many groups of breeding birds vary across geographic regions (James et al. 1992, Herkert 1995, Sauer et al. 1997), the declining trend for grassland birds is consistent across much of North America, including the Northeas...

An effective approach to species conservation involves efforts to prevent species from becoming threatened with extinction before they become listed as endangered. Standardized monitoring efforts provide the data necessary to estimate population trajectories of many species so that management agencies can identify declining species before they reach the point of endangerment. Species that occur...

Brazil has a high diversity of birds and presents the largest number threatened bird species in neotropical region. Even so, there are gaps knowledge, especially ecotonal montane regions. Given this panorama, study aimed to analyse community distribution (richness, composition, beta between phytophysiognomies) an landscape southeastern Brazil, with purpose detecting substitution patterns on mes...

Parrots (Psittaciformes) are a well-studied, diverse group of birds distributed mainly in tropical and subtropical regions. Today, one-third their species face extinction, due to anthropogenic threats. Emerging tools genetics have made major contributions understanding basic applied aspects parrot biology the wild captivity. In this review, we show how genetic methods transformed study parrots ...

Ramsar site designation is an acknowledgment of a wetland’s importance. In this study, we conducted biodiversity survey around Natuna to examine its eligibility as the next in Indonesia. This was through sampling for biological resources, using either transect, trapping, or visual observation. We surveyed 32 stations endangered and vulnerable fish, water birds, wetland-dependent species. Sample...

The northeast Brazilian state of Alagoas harbors a rather diverse, and one the world’s most threatened, avifauna. However, knowledge about its avifauna is currently scattered on several publications state’s birds have never been comprehensively assembled into checklist. To fill this shortfall, we present here first critical review all available bird records for Alagoas. We list 520 species reco...

Species invasions contribute to global environmental change and cause declines in populations of threatened endangered species. Significant government funds are expended on invasive species management (ISM) actions each year. Public support compliance critical the success these actions. We conducted a study assess determinants general public’s for ISM identify potential barriers ISM. administer...

Arable land covers a large part of the European landscape, and its biodiversity is declining rapidly due to agricultural intensification. Among most threatened groups organisms are insectivorous ground-foraging farmland birds. To reverse their decline, it necessary understand impact agriculture on factors potentially shaping populations. This study therefore evaluates invertebrate food availabi...

Birds play a vital role in ecosystems. Studying avifaunal diversity therefore has noteworthy indicating nature’s ecological balance the environment. A total of 749 bird species have so far been recorded Bhutan. We present comprehensive checklist birds Tsirang, District which largely lies outside Bhutan’s protected area system. The data was collected through opportunistic encounters and with reg...