The interaction between human and wildlife sharing same resources often result negative outcomes and are referred as the human wildlife conflict which affects not only humans but also the wild species. Such conflicts, especially from the mega-herbivores such as elephants has become one of the major management challenges for the Chitwan National Park (CNP), Nepal. Spatial and temporal patterns of human elephant conflict (HEC) in the buffer zone of CNP were analyzed using park data and questionnaire survey conducted among three hundred and ninety residents of thirteen buffer zone user committees (BZUC) within Chitwan district from October 2016 to May 2017. Five hundred and forty-three HEC incidents including three human deaths and two human injuries were reported in BZUC from January 2013 to April 2017. Crop damage was found to be the most common type of damage caused by elephants and were higher during post-monsoon. Property damage incidents were higher during the winter season. There was a negative association between the number of HEC incidents and distance from the forest edge of the national park. However, no significant relation of HEC incidents was observed with average monthly temperature and rainfall. Despite of increasing HEC incidents, majority of people (77%) had positive attitude towards elephant conservation and considered elephants as nation’s treasure.

Animals inhabiting colder climates have a larger body size (Bergmann’s rule) and smaller body extremities (Allen’s rule), which help homeothermic animals to retain heat. Such ecogeographical phenomena have frequently been observed in animals along the latitudinal gradient and have occasionally been tested along the elevational gradient. This study tested whether these ecogeographic rules hold true for the morphology of sparrows (Passer spp.) along the elevational gradient offered by the Himalaya in central Nepal. Seventy house sparrows and twenty-eight tree sparrows were captured from 22 different localities of central Nepal between 100 and 3400 m asl, and morphological traits such as body size (body mass, tarsus length, wing length and tail length) and body extremities (bill length and bill width) were measured. Linear regression analysis was used to test the association of morphological measurements with elevation and climatic variables. House sparrows (Passer domesticus) had a wider elevational distribution range and exhibited significantly larger body sizes than the Eurasian tree sparrows (P. montanus). House sparrows had larger body sizes and smaller bills at higher elevations in adherence to Bergmann’s rule and Allen’s rule. Bill length in house sparrows showed a positive association with the temperature following the proposition of Allen’s rule. However, the morphological measurements in Eurasian tree sparrows did not show a distinct pattern with elevation and climatic variables. Therefore, this study concludes that ecogeographical phenomena such as Bergmann’s rule and Allen’s rule could be species-specific based on their biological and ecological characteristics.