Bird diversity and factors affecting bird abundance at Dullu Municipality, Dailekh, Nepal




Abstract. Shah SB, Sharma HP. 2022. Bird diversity and factors affecting bird abundance at Dullu Municipality, Dailekh, Nepal. Biodiversitas 23: 1535-1545. Bird distribution, diversity, and abundance in any ecosystem are determined by seasonality, disturbances, and availability of resources. The point count method was used for bird surveys during the winter and summer season to identify the bird diversity and factors affecting bird abundance in 2020 at Dailekh District, Nepal. Altogether 98 bird species belonging to 11 orders and 38 families were recorded. The highest species richness was found for order Passeriformes and Muscicapidae family. Among recorded species, the higher species richness of birds was found during winter than summer season, and 52 bird species were observed at both seasons. These birds were more evenly distributed in summer than in the winter season. Among 98 species, the higher bird species were resident (91%), followed by winter migrants (7%), and remaining 2% of birds were summer and passage migrants. Himalayan Vulture (Gyps himalayensis Hume, 1869) and Alexandrine Parakeet (Palaeornis eupatria Linnaeus, 1766) were near threatened species found in the study area. Forest habitats had more diverse bird species than agricultural land. Different environmental parameters such as nearest distance to the water source, canopy cover, and nearest distance to forest habitat significantly affected bird occurrences. The species richness was positively correlated with the nearest distance to agricultural land for both seasons; however, it decreased with increasing distance to water source and canopy cover. In the study area, migratory, residential, endemic, and threatened bird species indicated the uniqueness of the bird habitat in the area; therefore, a site-specific management plan is necessary to conserve these bird species.


Acharya KP, Paudel PK. 2020. Biodiversity in Karnali Province: Current Status and Conservation. Ministry of Industry, Tourism, Forest and Environment, Karnali Province Government, Surkhet, Nepal.
Adhikari JN, Bhattarai BP, Thapa TB. 2019. Factors affecting diversity and distribution of threatened birds in Chitwan National Park, Nepal. J Threat Taxa 11 (5): 13511-13522. DOI: 10.11609/jot.4137.11.5.13511-13522.
Adhikari S, Sharma HP, Gautam R, Basaula R. 2020. Effects of weather on breeding success of ashy prinia (Prinia socialis) in Manigram of Tilottama Municipality, Nepal. Nepal J Environ Sci 8:11-16. DOI: 10.3126/njes.v8i1.35404.
Almazán-Núñez RC, Alvarez-Alvarez EA, Pineda-López R, Corcuera P. 2018. Seasonal variation in bird assemblage composition in a dry forest of Southwestern Mexico. Ornit Neotrop 29: 215-224.
Amani M, Salehi B, Mahdavi S, Brisco B. 2018. Spectral analysis of wetlands using multi-source optical satellite imagery. Intl Soc Photog Remote Sens 144: 119-36. DOI: 10.1016/j.isprsjprs.2018.07.005.
Areaya H, Yonas M, Haileselasie TH. 2013. Community composition and abundance of residential birds in selected church forests, Tigray Region, Northern Ethiopia. Sci Res Essays 8 (22): 1038-1047. DOI: 10.5897/SRE2013.5367.
Barcante L, Vale M, Alves MA. 2017. Altitudinal migration by birds: A review of the literature and a comprehensive list of species. J Field Ornithol 88 (4): 321-335. DOI: 10.1111/jofo.12234.
Basaula R, Sharma HP, Belant JL, Sapkota K. 2021. Invasive water hyacinth limits globally threatened waterbird abundance and diversity at Lake Cluster of Pokhara Valley, Nepal. Sustainability 13 (24): 13700. DOI: 10.3390/su132413700.
Belay D, Yihune M. 2017. Diversity, distribution and relative abundance of avian fauna in and around Zengo Forest, East Gojjam, Ethiopia. Intl J Ecol Environ Sci 43(4): 287-293.
Brawn JD, Robinson SK, Thompson III FR. 2001. Role of disturbance in the ecology and conservation of birds. Ann Rev Ecol Systemat 32: 251-276. DOI: 10.1146/annurev.ecolsys.32.081501.114031.
Burnham KP, Anderson DR. 2002. Model Selection and Multimodel Inference: A Practical Information-Theoretic Approach 2nd ed. Springer, New York.
Chaudhary UK, Kafle G, Baral HS. 2009. Avifaunal diversity of Khata Corridor Forest. J Wetl Ecol 2: 48-56. DOI: 10.3126/jowe.v2i1.1857.
Delany S, Williams C, Sulston C, Norton J, Garbutt D. 2017. Passerine migration across the Himalayas. In: Prins HHT, Namgail T (eds). Bird Migration Across the Himalayas: Wetland Functioning Amidst Mountains and Glaciers. Cambridge University Press, United Kingdom.
Desgranges J, Ingram J, Drolet B, Morin J, Savage C, Borcard D. 2006. Modelling wetland bird response to water level changes in the Lake Ontario-St. Lawrence River hydro system. Environ Monit Assess 113: 329-365. DOI: 10.1007/s10661-005-9087-3.
Dhakal H, Sharma HP, McClure CJ, Virani M, Rolek BW, Pradhan NM, Bhusal KP. 2022. Vulture distribution and people perception of vultures in Pokhara Valley, Nepal. Ecol Evol 12 (1): e8528. DOI: 10.1002/ece3.8528.
DNPWC, BCN. 2018. Department of National Parks and Wildlife Conservation and Bird Conservation Nepal. Birds of Nepal: An Official Checklist, Kathmandu, Nepal.
DNPWC. 2018. Department of National Parks and Wildlife Conservation, Nepal. Available: http:// Accessed on 22 May 2021.
Eyres A, Böhning-Gaese K, Fritz SA. 2017. Quantification of climatic niches in birds: Adding the temporal dimension. J Avian Biol 48 (12): 1517-1531. DOI: 10.1111/jav.01308.
Girma Z, Mengesha G, Asfaw T. 2017. Diversity, relative abundance and distribution of avian fauna in and around Wondo Genet forest, South-Central Ethiopia. Res J Forest 11 (1): 1-12. DOI: 10.3923/rjf.2017.1.12.
Grimmett R, Inskipp C, Inskipp T, Baral HS. 2016. Birds of Nepal: Helm Field Guide, Bloomsbury Publishing India Pvt., Ltd., New Delhi, India.
Harsha MN, Hosetti BB. 2009. Diversity and distribution of avifauna of Lakkavalli Range Forest, Bhadra Wildlife Sanctuary, Western Ghat, India. Ecoprint 16: 21-27. DOI: 10.3126/eco.v16i0.3469.
Hu Y, Jin K, Huang Z, Ding Z, Liang J, Pan X, Hu H, Jiang Z. 2017. Elevational patterns of non-volant small mammal species richness in Gyirong Valley, Central Himalaya: Evaluating multiple spatial and environmental drivers. J Biogeog 44: 2764-2777. DOI: 10.1111/jbi.13102.
Huff MH. 2000. A Habitat-Based Point-Count Protocol for Terrestrial Birds, Emphasizing Washington and Oregon (Vol. 501, pp. 39). US Department of Agriculture, Forest Service, Pacific Northwest Research Station. DOI: 10.2737/PNW-GTR-501.
Husein ZJ, Sultan M. 2019. Species composition and relative abundance of birds at Nansebo Forest, Southern Ethiopia. Adv Life Sci Technol 73: 1-9. DOI: 10.7176/ALST.
Inskipp C, Baral HS, Acharya S, Chaudhari H, Ghimire M, Giri D. 2020. Rare birds in Nepal. Nep J Zool 4 (2): 108-132. DOI: 10.3126/njz.v4i2.33894.
Inskipp C, Baral HS, Inskipp T, Khatiwada AP, Khatiwada MP, Poudyal LP. Amin R. 2017. Nepal's national red list of birds. J Threat Taxa 9 (1): 9700-9722. DOI: 10.11609/jott.2855.9.1.9700-9722.
Inskipp C, Baral HS, Phuyal S, Bhatt TR, Khatiwada M, Inskipp T, Khatiwada A, Gurung S, Singh PB, Murray L, Poudyal L, Amin R. 2016. The Status of Nepal’s Birds: The National Red List Series, Zoological Society of London, UK. asia/national-redlistof-Nepal-birds. Accessed on 12 May 2021.
IUCN. 2021. The IUCN Red List of Threatened Species. Version 2021-3. <>. Accessed on 12 December 2021.
Johnson CK, Hitchens PL, Pandit PS, Rushmore J, Evans TS, Young CCW, Doyle MM. 2020. Global shifts in mammalian population trends reveal key predictors of virus spillover risk. Proc Royal Soc B. 287: 20192736. DOI: 10.1098/rspb.2019.2736.
Kandel P, Thapa I, Chettri N, Pradhan R, Sharma E. 2018. Birds of the Kangchenjunga Landscape, the Eastern Himalaya: status, threats and implications for conservation. Avian Res 9 (9): 1-13. DOI: 10.1186/s40657-018-0100-2.
Katuwal HB, Basnet H, Sharma HP, Koirala S, Khanal B, Neupane KR, Panta DB, Parajuli K, Lamichhane S, Rai M, Pun T, Shakya S, Baral S. 2020. Wildlife assessment of the Chandragiri Hills, Kathmandu: Potential for ecotourism. Eur J Ecol 6 (1): 27-50. DOI: 10.17161/eurojecol.v6i1.13520.
Katuwal HB, Basnet K, Khanal B, Devkota S, Rai SK, Gajurel JP. Scheidegger C, Nobis MP. 2016. Seasonal changes in bird species and feeding guilds along elevational gradients of the Central Himalayas, Nepal. PLoS ONE. 11 (7): e0158362. DOI: 10.1371/journal.pone.0158362.
Katuwal HB, Sharma HP, Shaner PJL, Gurung, R, Thapa V, Magar TG, Gurung TB, Parajuli K, Gurung MB, Basnet H, Koirala S, Ghimire MS, Yadav S, Belant JL, Shah K. 2018. Updating spatial information of 27 mammal species in Nepal. J Anim Plant Sci 28 (6): 1735-1745.
Katuwal HB, Zhang M, Baral HS, Sharma HP, Quan RC. 2021. Assessment of farmers' knowledge and perception towards farmland birds show the need of conservation intervention. Glob Ecol Conserv 27: e01563. DOI: 10.1016/j.gecco.2021.e01563.
Lee JH, Park D, Sung HC. 2012. Large-scale habitat association modeling of the endangered Korean rat snake (Elaphe schrenckii). Zool Sci 29 (5): 281-285. DOI: 10.2108/zsj.29.281.
Libal NS, Belant JL, Leopold BD, Wang G, Owen PA. 2011. Despotism and risk of infanticide influence grizzly bear den-site selection. PloS ONE 6 (9): e24133. DOI: 10.1371/journal.pone.0024133.
Maas B, Clough Y, Tscharntke T. 2013. Bats and birds increase crop yield in tropical agroforestry landscapes. Ecol Lett 16: 1480-1487. DOI: 10.1111/ele.12194.
Mengesha G, Mamo Y, Bekele A. 2011. A comparison of terrestrial bird community structure in the undisturbed and disturbed areas of the Abijata Shalla Lakes National Park, Ethiopia. Intl J Biodivers Conserv 3: 389-404. DOI: 10.5897/IJBC.9000004.
Mulwa RK, Böhning?Gaese K, Schleuning M. 2012. High bird species diversity in structurally heterogeneous farmland in Western Kenya. Biotrop 44 (6): 801-809. DOI: 10.1111/j.1744-7429.2012.00877.x.
Pandey N, Khanal L, Chalise MK. 2020. Correlates of avifaunal diversity along the elevational gradient of Madhari Himal in Annapurna Conservation Area, Central Nepal. Avian Res 11 (1): 1-14. DOI: 10.1186/s40657-020-00217-6.
Pielou EC. 1966. The measurement of diversity in different types of biological Collections. J Theor Biol 13: 131-144. DOI: 10.1016/0022-5193(66)90013-0.
Price TD, Hooper DM, Buchanan CD, Johansson US, Tietze DT, Alström P, Ghosh-Harihar M, Ishtiaq F, Gupta SK, Martens J, Harr B, Singh P, Mohan D. 2014. Niche filling slows the diversification of Himalayan songbirds. Nature 509: 222-225. DOI: 10.1038/nature13272.
Pyšek P, Blackburn TM, García-Berthou E, Perglová I, Rabitsch W. 2017. Displacement and local extinction of native and endemic species. impact of biological invasions on ecosystem services. In: Vilà M, Hulme PE (eds.). Impact of Biological Invasions on Ecosystem Services. Invading Nature - Springer Series in Invasion Ecology, Berlin. DOI: 10.1007/978-3-319-45121-3_10.
Saini V, Joshi K, Bhatt D, Singh A, Joshi R. 2017. Short Communication: Waterbird species distribution between natural and manmade wetland in Himalayan foothills of Uttarakhand, India. Biodiversitas 18: 334-340. DOI: 10.13057/biodiv/d180144.
Sarkar MS, Pandey A, Singh G, Lingwal S, John R, Hussain A, Rawat GS, Rawal RS. 2018. Multiscale statistical approach to assess habitat suitability and connectivity of common leopard (Panthera pardus) in Kailash Sacred Landscape, India. Spatial Stat 28: 304-318. DOI: 10.1016/j.spasta.2018.07.006.
Shannon-Wiener CE, Weaver W, Weater WJ. 1949. The Mathematical Theory of Communication; Math. Theory Commun. EUA University Illinois Press, Urbana, IL, USA.
Shoo LP, Williams SE, Hero JM. 2005. Climate warming and the rainforest birds of the Australian Wet Tropics: Using abundance data as a sensitive predictor of change in total population size. Biol Conserv 125: 335-343. DOI: 10.1016/j.biocon.2005.04.003.
Symes WS, Edwards DP, Miettinen J, Rheindt FE, Carrasco LR. 2018. The combined impacts of deforestation and wildlife trade on tropical biodiversity are severely underestimated. Nature Comm 9 (1): 1-9. DOI: 10.1038/s41467-018-06579-2.
Tanalgo KC, Pineda JAF, Agravante ME, Amerol ZM. 2015. Bird diversity and structure in different land-use types in lowland South-Central Mindanao, Philippines. Trop Life Sci Res 26 (2): 85-103.
Tzortzakaki O, Kati V, Kassara C, Tietze DT, Giokas S. 2018. Seasonal patterns of urban bird diversity in a Mediterranean coastal city: The positive role of open green spaces. Urban Ecosyst 21: 27-39. DOI: 10.1007/s11252-017-0695-9.
Werema C, Howell KM. 2016. Seasonal variation in University and abundance of understorey birds in Bunduki Forest Reserve, Tanzania: Evaluating the conservation value of a plantation forest. Ostrich 87 (1): 89-93. DOI: 10.2989/00306525.2015.1110842.
Wilson JD, Morris AJ, Arroyo BE, Clark SC, Bradbury RB. 1999. A review of the abundance and diversity of invertebrate and plant foods of granivorous birds in northern Europe in relation to agricultural change. Agric Ecosyst Environ 75 (1-2): 13-30. DOI: 10.1016/S0167-8809(99)00064-X.
Zhang DC, Zhang YH, Boufford DE, Sun H. 2009. Elevational patterns of species richness and endemism for some important taxa in the Hengduan Mountains, Southwestern China. Biodiv Conserv 18: 699-716. DOI: 10.1007/s10531-008-9534-x.