scholarly journals Status and Diversity of Birds of Ramna Park, Dhaka, Bangladesh

2016 ◽  
Vol 43 (2) ◽  
pp. 291-301
Author(s):  
Sultana Rajia ◽  
Md Mahabub Alam ◽  
Gawsia Wahidunnessa Chowdhury ◽  
Muntasir Akash ◽  
Md Anwarul Islam
Keyword(s):  
Relative Abundance ◽  
Migratory Birds ◽  
Anthropogenic Activities ◽  
Bird Species ◽  
Single Individual ◽  
Field Observations ◽  
Species Evenness ◽  
Number Of Species ◽  
Number Of Individuals ◽  
Near Threatened

A study on status and diversity of birds of Ramna Park, Dhaka, Bangladesh was conducted from July 2013 to March 2014. Data were collected through direct field observations where 6 days had been spent in every month in the field. A total of 50 species of birds belonging to 11 orders and 28 families were observed. Of the 50 species, 84% were residents and 16% migrants, 50% were passerines, 50% non-passerines. Passeriformes presented the highest number (25 species) of observed birds. Only Clamator jacobinus was recorded as summer migrant among the migratory birds. We found Psittacula eupatria considered as Near Threatened globally according to IUCN. Corvus splendens was the most common with the highest number of individuals in comparison to other bird species. We observed single individual of Clamator jacobinus followed by Psittacula eupatria and Apus pacificus throughout the study. Regarding the relative abundance, 18% species were very common, 30% common, 16% fairly common and 36% few. Calculating the Shannon-Wiener and Simpson’s indices of diversity and species evenness, we found maximum number of species and individuals in the month of December while minimum in the month of July. Anthropogenic activities such as festivals, random assemblies and gatherings, dumping of plastics, polythene and papers, noise from the vehicles were common inside and around the park, which may be threats to birds.Bangladesh J. Zool. 43(2): 291-301, 2015

scholarly journals Monitoring migratory birds in stopover habitat: assessing the value of extended duration audio recording

2020 ◽  
Author(s):  
Ellie Roark ◽  
Willson Gaul
Keyword(s):  
Species Identification ◽  
Relative Abundance ◽  
Migratory Birds ◽  
Survey Method ◽  
List Type ◽  
Point Counts ◽  
Migration Timing ◽  
Number Of Species ◽  
Extended Duration ◽  
Stopover Habitat

ABSTRACTBecause birds are frequently detected by sound, autonomous audio recorders (called automated recording units or ARUs) are now an established tool in addition to in-person observations for monitoring the status and trends of bird populations. ARUs have been evaluated and applied during breeding seasons, and to monitor the nocturnal flight calls of migrating birds. However, birds behave differently during migration stopover than during the breeding season. Here we present a method for using ARUs to monitor land birds in migration stopover habitat.We conducted in-person point counts next to continuously recording ARUs, and compared estimates of the number of species detected and focal species relative abundance from point counts and ARUs. We used a desk-based audio bird survey method for processing audio recordings, which does not require automated species identification algorithms. We tested two methods of using extended duration ARU recording: surveying consecutive minutes, and surveying randomly selected minutes.Desk-based surveys using randomly selected minutes from extended duration ARU recordings performed similarly to point counts, and better than desk-based surveys using consecutive minutes from ARU recordings. Surveying randomly selected minutes from ARUs provided estimates of relative abundance that were strongly correlated with estimates from point counts, and successfully showed the increase in abundance associated with migration timing. Randomly selected minutes also provided estimates of the number of species present that were comparable to estimates from point counts.ARUs are an effective way to track migration timing and intensity in remote or seasonally inaccessible migration stopover habitats. We recommend that desk-based surveys use randomly sampled minutes from extended duration ARU recordings, rather than using consecutive minutes from recordings. Our methods can be immediately applied by researchers with the skills to conduct point counts, with no additional expertise necessary in automated species identification algorithms.

scholarly journals Avian Diversity of Oak Mixed Forest in Pauri Garhwal, Uttarakhand, India

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
Jarnail Singh ◽  
Sunil Bhandari ◽  
M S Bisht
Keyword(s):  
Species Richness ◽  
Field Survey ◽  
Diversity Index ◽  
Mixed Forest ◽  
Bird Species ◽  
Bird Diversity ◽  
Species Evenness ◽  
Avian Diversity ◽  
Number Of Species

The avian diversity of Oak mixed forest in Pauri Garhwal district of Uttarakhand was studied during October 2019 to March 2020. Two strands of oak mixed forest located at different sites at 29º 22’-29º 75’ North and 78º, 10’ -78º,80’ East (1750 masl) were selected. Regular field survey was carried out during the morning and evening hours at each site. A total of 63 species of birds belonging to 07 orders and 31 families were recorded. The average bird diversity index H ¯was 3.202. The species richness was observed around 7.27 and species evenness was 0.72. The highest number of species was recorded at Ransi Oak mixed forest (63) and lowest number of bird species were recorded in Teka Oak mixed forest (60).

scholarly journals A RAPID BIRD SURVEY TO CONSERVATION AREA OF INDUSTRIAL ACACIA TIMBER PLANTATION, SOUTH SUMATRA PROVINCE; WITH COMPARISON TO THREE DIFFERENT METHODS

2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Muhammad Iqbal ◽  
Indra Yustian ◽  
Doni Setiawan ◽  
Rio Firman Saputra ◽  
Catur Yuono Prasetyo ◽  
...  
Keyword(s):  
Survey Methods ◽  
Bird Species ◽  
Bird Diversity ◽  
International Union ◽  
Conservation Area ◽  
Swamp Forest ◽  
Number Of Species ◽  
Transect Line ◽  
Bird Survey ◽  
Near Threatened

A rapid bird survey was done in a small conservation area of industrial timber concession of PT BMH (Bumi Mekar Hijau), namely KPPN (Kawasan Pelestarian Plasma Nutfah), South Sumatra Province. The area has 448 ha, dominated by degraded secondary swamp forest surrounded by Acacia plantation. Three survey methods were applied to assess bird diversity in this area: transect line, mist-netting and audio-visual station recording. A total of 36 species was recorded during survey. Among three methods applied, transect line is the most effective method to detect more bird species (29 species), followed by audio-visual station recording (26 species) and mist-netting (three species). There are eight species which protected by Indonesian law and two birds are listed as Near Threatened (NT) by International Union for Conservation of Nature or IUCN. Although number of species birds recorded are not significance, but this area still support habitat for various birds diversity, and the forest remaining should be well-managed to support its conservation goals.

Seasonal Diversity and Population Status of Waterbirds in Phewa Lake, Pokhara, Nepal

1970 ◽  
pp. 3-7 ◽  
Author(s):  
Bikash Giri ◽  
Mukesh Kumar Chalise
Keyword(s):  
Bird Species ◽  
Bird Diversity ◽  
Population Status ◽  
Number Of Species ◽  
Waterbird Species ◽  
Periodic Monitoring ◽  
Different Seasons ◽  
Seasonal Diversity ◽  
Lake Systems ◽  
Number Of Individuals

The study (2007-08) was carried out in Phewa Lake which is one of the largest lake systems in Nepal to evaluate seasonal diversity and population status of waterbirds. A total of 39 waterbird species belonging to 17 families of 5 orders was recorded. The highest number of species (31 species) was found in December and January. Winter was the most diverged season in terms of number of species (35 species) and summer and autumn by 17 species. January had the highest (1584) and September the lowest (345) waterbird population. Out of 39 species, 15 species were winter visitors, 10 resident, and 4 rare winter visitor. The highest diversity ( H =2.6228) was found in February and lowest ( H =1.2014) in June. The value of evenness (Jacob's coefficient) was higher (0.8485) in February and lowest (0.4555) in June. During June, 69.92% (616 individuals) of the total population (881) constituted only Cattle Egret. The dominancy was found highest (C=0.5058) in June and lowest (C=0.1020) in February. The bird communities of summer and autumn were more similar (S=0.7059) than the summer and winter (S=0.5). The fluctuation in number of individuals of bird species was found unrelated to seasons (months) (F=1.71, df = 8, 342, P ≤ 0.05). The species richness was found different in different seasons (months) (Χ2=29.34, df = 8, P ≤ 0.05). Detail study of bird diversity and population status with periodic monitoring in Phewa Lake is recommended for their conservation and management as a whole. Key Words: Phewa lake, wetland, waterbirds, diversity, population  DOI: 10.3126/jowe.v1i1.1568 Journal of Wetlands Ecology Vol.1(1/2) 2008, p.3-7

scholarly journals Avian diversity and their status in and around Bhindawas bird sanctuary, Haryana (India)

2017 ◽  
Vol 9 (3) ◽  
pp. 1475-1481
Author(s):  
Girish Chopra ◽  
Deepak Rai ◽  
Jyoti Jyoti
Keyword(s):  
Bird Species ◽  
Infrastructure Development ◽  
Avian Diversity ◽  
Number Of Species ◽  
Periodic Monitoring ◽  
White Ibis ◽  
Scanty Information ◽  
One Year ◽  
Near Threatened ◽  
Common Pochard

One year survey conducted in and around Bhindawas bird sanctuary in district Jhajjar, Haryana (India) from January, 2015 to December, 2015; revealed a total of 104 bird species belonging to 15 orders and 39 families. Of these, 67 bird species were resident, 32 species were winter migrants and only 5 species were summer migrants. Based on their frequency of sighting, 33 bird species were categorized as Abundant, 27 species as Common, 32 species as Uncommon and 12 species as Rare. Maximum number of species belonged to order Passeriformes and least number of species belonged to order Podicipediformes and Strigiformes. Among the recorded birds, 4 species namely, Darter, Anhinga melanogaster; Black-necked Stork, Ephippiorhynchus asiaticus; Oriental White Ibis, Threskiornis melanocephalus; and Alexandrine Parakeet, Psittacula eupatria were near threatened and 2 species namely, Common, Pochard, Aythya ferina and Sarus Crane, Grus antigone were vulnerable. In early 1990s, a study was conducted on Bhindawas bird sanctuary and thereafter, a great deal of infrastructure, development and urbani-zation has occurred. However, scanty information is available on the avian diversity periodic monitoring of Bhinda-was bird sanctuary, Haryana. Therefore, present study was planned to monitor and document the avian species.

scholarly journals On the birds of Marivan County, western Iran: an update

2018 ◽  
Vol 10 (5) ◽  
pp. 11613
Author(s):  
Fatah Zarei ◽  
Seyed Naseh Hosseini ◽  
Jalal Pezeshk ◽  
Loghman Maleki ◽  
Hamid Reza Esmaeili
Keyword(s):  
International Trade ◽  
Endangered Species ◽  
Conservation Status ◽  
Bird Species ◽  
Red List ◽  
Field Observations ◽  
Protected Species ◽  
Western Iran ◽  
Wildlife Refuge ◽  
Near Threatened

To update the avian checklist and note their conservation status in Marivan County, western Iran, we report the addition of 28 species belonging to six orders and 13 families recorded during our field observations in 2015–2017 outside the range of Zarivar Wildlife Refuge.  With 255 species reported in previous surveys from the Zarivar Wildlife Refuge and Marivan County, as well as 28 additions here, the avian checklist of Marivan County reaches 283 species from 19 orders and 57 families, which is equivalent to about 51.2% of total bird species recorded from Iran.  Appendix I of the Convention on International Trade in Endangered Species applies to five species and the Appendix II applies to 34 species.  The Red List considers six species as Vulnerable, three species as Endangered and 11 species as Near Threatened.  In addition, 15 species are endangered and another 43 species are protected species based on the rules and regularities/laws of the Iranian Department of the Environment.

scholarly journals Species diversity of birds as bioindicators for mangroves damage at Special Economic Zones (SEZ) Mandalika in Central of Lombok, Indonesia

2021 ◽  
Vol 913 (1) ◽  
pp. 012058
Author(s):  
M A A Salahuddin ◽  
I S Rohayani ◽  
D A Candri
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Migratory Birds ◽  
Diversity Index ◽  
Bird Species ◽  
Bird Community ◽  
Development Corporation ◽  
Economic Zones ◽  
Bird Species Diversity ◽  
Near Threatened

Abstract The Mandalika Special Economic Zone (SEZ) was designated as a tourist area in 2015. The development of the Mandalika area directly impacts the sustainability, diversity of species, especially birds that make mangroves their habitat. The study aims to investigate the value of bird species diversity in mangrove habitats as bioindicators. Furthermore, the research has been carried out for three months, from March to May 2021. Research data collection uses the roaming method, and data analysis uses bird community structure analysis (Diversity Index). In this study, 33 species of birds were found. Furthermore, it was found that six species of birds are protected wildlife. In addition, 16 are migratory birds, and 27 are Least Concern (LC) bird species; four species have Near Threatened (NT) status. Meanwhile, the Index of bird community structure is H’ 2.7, uniformity E 0.8, and dominance C 0.9. The value of the bird community structure in the Mandalika SEZ shows the condition of mangrove habitat in the moderate damage category. Therefore, there needs to be an effort to preserve mangroves involving the community, government, and Indonesia Tourism Development Corporation (ITDC) area managers.

scholarly journals Key conservation issues for migratory land- and waterbird species on the world's major flyways

2008 ◽  
Vol 18 (S1) ◽  
pp. S49-S73 ◽  
Author(s):  
Jeff S. Kirby ◽  
Alison J. Stattersfield ◽  
Stuart H. M. Butchart ◽  
Michael I. Evans ◽  
Richard F. A. Grimmett ◽  
...  
Keyword(s):  
Migratory Birds ◽  
Conservation Status ◽  
Bird Species ◽  
Iucn Red List ◽  
Red List ◽  
Neotropical Migrants ◽  
Infrastructure Development ◽  
Migratory Species ◽  
Waterbird Species ◽  
Near Threatened

AbstractAn estimated 19% of the world's 9,856 extant bird species are migratory, including some 1,600 species of land- and waterbirds. In 2008, 11% of migratory land- and waterbirds were classed by BirdLife International as threatened or near-threatened on the IUCN Red List. Red List indices show that these migrants have become more threatened since 1988, with 33 species deteriorating and just six improving in status. There is also increasing evidence of regional declines. Population trend data show that more Nearctic–Neotropical migrants have declined than increased in North America since the 1980s, and more Palearctic–Afrotropical migrants breeding in Europe declined than increased during 1970–2000. Reviews of the status of migratory raptors show unfavourable conservation status for 51% of species in the African–Eurasian region (in 2005), and 33% of species in Central, South and East Asia (in 2007). Land-use change owing to agriculture is the most frequently cited threat affecting nearly 80% of all threatened and near-threatened species. However, while agricultural intensification on the breeding grounds is often proposed as the major driver of declines in Palearctic–Afrotropical migrants, some species appear to be limited by the quantity and quality of available habitat in non-breeding areas, notably the drylands of tropical Africa. Forest fragmentation in breeding areas has contributed to the declines of Nearctic–Neotropical migrants with deforestation in non-breeding areas another possible factor. Infrastructure development including wind turbines, cables, towers and masts can also be a threat. Over-harvesting and persecution remain serious threats, particularly at key migration locations. Climate change is affecting birds already, is expected to exacerbate all these pressures, and may also increase competition between migratory and non-migratory species. The conservation of migratory birds thus requires a multitude of approaches. Many migratory birds require effective management of their critical sites, and Important Bird Areas (IBAs) provide an important foundation for such action; however to function effectively in conserving migratory species, IBAs need to be protected and the coherence of the network requires regular review. Since many migratory species (c. 55%) are widely dispersed across their breeding or non-breeding ranges, it is essential to address the human-induced changes at the wider landscape scale, a very considerable challenge. Efforts to conserve migratory birds in one part of the range are less effective if unaddressed threats are reducing these species' populations and habitats elsewhere. International collaboration and coordinated action along migration flyways as a whole are thus key elements in any strategy for the conservation of migratory birds.

scholarly journals The Survey of Avifauna in the natural habitat and their adjoining areas of Harbhajwala, Dehradun, India

2021 ◽  
pp. 162-167
Author(s):  
Rekha Rawat ◽  
Keyword(s):  
Threatened Species ◽  
Natural Habitat ◽  
Bird Species ◽  
Avian Species ◽  
Migratory Species ◽  
Egyptian Vulture ◽  
Number Of Species ◽  
The Family ◽  
Near Threatened

The present study deals with the observation of avifauna in the Natural habitat and their adjoining areas of Harbhajwala in Dehradun, Uttarakhand. The study was carried out between December 2018 to October 2020. We observed 114 bird species, belonging to 50 families during the study period. Out of these 97 residents and 19 winters, migratory species were identified. The percentage of resident and winter visitor avian species was found to be 84% and 16%. Then the maximum number of species recorded from the family Muscicapidae. During the observation, we observed the Egyptian Vulture and Alexandrine Parakeet as Endangered and near-threatened species respectively according to IUCN. The presence of threatened species indicates the more conservation efforts are needed in the study area.

scholarly journals Bird communities and vegetation composition in Nusa Penida, Bali, Indonesia

2019 ◽  
Vol 20 (12) ◽  
Author(s):  
Franciscus Xaverius Sudaryanto ◽  
Junita Hardini ◽  
Lalu Achmad Tan Tilar Wangsajati Sukmaring Kalih ◽  
Muhammad Mirzan Asrori ◽  
I Wayan Suana
Keyword(s):  
Migratory Birds ◽  
Conservation Status ◽  
Bird Species ◽  
Bird Community ◽  
Iucn Red List ◽  
Bird Communities ◽  
Vegetation Composition ◽  
Point Count ◽  
Point Count Method ◽  
Near Threatened

Abstract. Sudaryanto FX, Hardini J, Kalih LATTWS, Asrori MM, Suana IW. 2019. Bird communities and vegetation composition in Nusa Penida, Bali, Indonesia. Biodiversitas 20: 3676-3683. A study on bird community and vegetation composition in Nusa Penida was carried out to determine its diversity, conservation status, and habitat as an effort to conserve and develop birdwatching ecotourism in Nusa Penida. The study was conducted in Tembeling forest and Ped agroforestry. By using the point count method, we found 80 species of birds: 70 species in Tembeling forest and 79 species in Ped agroforestry. Fourteen species of birds are protected by Indonesian law. According to the IUCN Red List of Threatened Species, four species are Critically Endangered and one species is classified as Near Threatened. We also found eight species of migratory birds. Diversity of birds in Nusa Penida was high. Individuals of each bird species was spread evenly, except Hirundo rustica, Hirundo tahitica and Streptopelia chinensis were dominant. Twenty-five species of trees were found in Tembeling, while in Ped were found 22 species. These vegetations were provided birds with good resources for foraging, resting, and nesting.

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