On the high bird diversity in the non-protected regions of Trashiyangtse District in Bhutan

Vineeth Kumar, Hasyagar V, M.C. Prashantha Krishna, Naik D. A checklist of avifauna of Mangalore University, Karnataka, India

The study of the avifaunal diversity was carried out in the Mangalore University campus, located in Dakshina Kannada District, Karnataka from 2013 to 2021, in and around the campus. A total of 150 bird species belonging to 18 orders and 56 families were recorded during the study. Out of these, the study area supports five species which are endemic to the Western Ghats. The feeding guild analysis revealed that the insectivorous group had the highest number of species (53 species). The study provides baseline data for monitoring the avifauna in the campus and demonstrates the importance of the area in bird conservation.

Species Distribution Modelling of Two Sympatric Hornbills: The Great Hornbill and Rufous-Necked Hornbill in Bhutan

The great hornbill (Buceros bicornis) and rufous-necked hornbill (Aceros nepalensis) are listed as vulnerable under the International Union for Conservation of Nature Red List of threatened species due to the rapid decline of their population in the world. This research focuses on analyzing the habitat suitability of these two important bird species across Bhutan. A total of 51 presence locations were recorded from the field survey. The models were simulated using three topographic variables and 19 bioclimatic variables. The MaxEnt modelling technique was used for delineating the distribution potential habitat suitability map. The habitat suitability analysis for great hornbill and rufous-necked hornbill shows that 2% and 3% of Bhutan’s total geographical area were highly suitable, respectively. The approach of this study will be beneficial in identifying suitable areas and aid decision-makers in management and conservation of these vulnerable bird species.