The world has been encountering a COVID-19 pandemic since late 2019. The world’s people have also witnessed the free movement of wildlife, even in many urban areas in some countries during the imposed lockdown. We conducted research on the birds in the urban landscape of Jamalpur Sadar upazila from March 2020 to October 2020 during this pandemic situation. A total of 134 species of birds with 4338 individuals were recorded during the study period. The number of resident bird species was the maximum (115 species, 85.82%) compared to migrants. The highest number of birds was observed (120 species, 89.55%) and counted 2278 individual birds 52.51%) in the summer season. It was observed that the highest diversity of birds (89 species, 65.92%) was in March. The tree was the most (94 species, n = 2502) used microhabitat by birds in the study area. Among all birds, Pycnonotus cafer was the most abundant bird species with the highest relative abundance (6.11%). Some bird species (e.g. Metopidius indicus, Anastomus oscitans, Amaurornis phoenicurus, Streptopelia tranquebarica, Lonchura malacca) were frequently observed in the urban landscape of the study area during the pandemic. Proper management and awareness creation are essential for the conservation of the bird species in this area. Dhaka Univ. J. Biol. Sci. 30(2): 261-274, 2021 (July)
Nowadays urbanization continues, and poses a serious threat to wildlife globally. A survey-based study on wildlife was conducted for three years from March 2017 to February 2020 in Dhaka University campus. Data was collected through direct visual encounter observations. A total of 94 species of wildlife under 20 orders and 52 families were observed. Of the documented wildlife, 5 (5.32%) species belongs to amphibians, 10 (10.64%) reptiles, 70 (74.47%) birds and 9 (9.57%) mammals. The highest species richness (72, 76.60%) was observed in the third year (March 2019 to February 2020), particularly in winter season. Although the lowest richness was (63, 67.02%) found in the first year (March 2017 to February 2018), but the evenness was the highest this year, particularly in summer season. We counted the highest number of individuals (n=5227, 35.73%) in the first year (March 2017 to February 2018) but these counts have gradually decreased with the lowest in the third year (March 2019 to February 2020). Among 94 species, 44 species (46.80%) were very common, 3 (3.19%) common, 17(18.09%) uncommon and 30 (31.91%) were few. Duttaphrynus melanostictus was the most abundant (66.89%) among amphibians, Hemidactylus frenatus (40.82%) for reptiles, Psittacula krameri (18.73%) for birds and Mus musculus (28.68%) for mammals. Rampant human movements and sound pollution were frequent inside the campus that might affect wildlife. Therefore, long-term systematic monitoring is necessary to understand the species diversity and population trend of wildlife in the campus. Moreover, this baseline information may help urban policymakers to take proper management measures for the protection of wildlife in the study area. Dhaka Univ. J. Biol. Sci. 30(3 CSI): 429-442, 2022 (June)
A study on diversity, status, and habitat preference of avifauna was conducted from November 2017 to October 2018 in Magura Sadar upazila, Magura. Data was collected through direct field observations using line-transect method. Field surveys were made for three days per month in both rural and urban sites. A total of 140 species of birds belonged to 18 orders and 48 families were reported. Among the total species, 55% (77 species) were non-passerines and 45% (63 species) passerines with the highest individuals were counted under order Passeriformes. Resident bird species were dominant (106 species, 75.71%) over migratory (34 species, 24.28%) species. Species richness was the highest in the rural areas (124 species, 88.57%) and occurrence was the highest in winter season (97 species, 69.29%). The maximum species were recorded from trees (87 species, 62.14%) as preferred habitat. In this study, in total 4,060 individuals of birds were counted and among them, 51.55% (n=2093) were observed in the rural areas and 48.45% (n=1967) were in the urban areas. The highest number of birds was found in December (10.34%, n=432) and seasonal abundance was the highest in winter (40.15%, n=1630). Abundance was the highest for Common Myna (5.76%, n=234) among all recorded species. Diversity indices showed that the bird species were the most diverse in the rural areas in the winter season and in July. Habitat diversity indices were the highest for trees and birds used different types of habitats at different times for roosting, breeding and feeding. Regarding the observation status, 29.28% species was very common, 4.28% common, 31.42% fairly common, and 35% were few. This baseline data indicate that this study site is significant from the ecological and conservation point of views. Therefore, further research is necessary to understand how this avian diversity is maintained in this ecological setting. Bangladesh J. Zool. 48(2): 441-456, 2020
A yearlong scientific study was conducted using direct field observation technique from November 2020 to October 2021 to investigate community structure, habitat preference, and conservation concerns of birds in the urban setting of Faridpur Sadar Upazila. A total of 168 species under 18 orders and 56 families were recorded and 6,551 individual of birds were counted. The order Passeriformes had the highest species richness (71 species, 42.26%) and abundance (n=3,831, 58.48%). Among the bird species, 48 species (29.58%) were migratory and the rest were resident. During the winter season, the highest number of bird species (156 species, 92.85%) and individuals (n= 2,960, 45.18%) were observed. The overall comparison of species richness and abundance for three seasons were significant. Pair-wise one-way ANOVA for species richness and abundance of birds shows significant differences between winter-rainy and summer-winter seasons.The diversity index showed the highest value in winter season. Analysis of similarity (ANOSIM) test showed a significant difference in birds communities among three-season. Among the 10 types of microhabitats surveyed, trees were the most used by the bird species (103 species, 61.31%) The highest 69 species (41.07%) were very common according to the observation status. The most abundant bird was Pycnonotus cafer with the highest relative abundance (5.15%). Bird hunting, trade, and habitat loss were the major threats for the survival of bird community in this area. Therefore, immediate initiatives are needed to implement for the conservation of bird and their habitats. Dhaka Univ. J. Biol. Sci. 31(2): 343-360, 2022 (July)
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