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Conservation of Breeding Colonies of the Bank Myna, Acridotheres Ginginianus (latham 1790), in Chapai Nawabganj, Bangladesh

M Farid Ahsan
M Tarik Kabir

Abstract/ Executive Summary:

A study on the conservation on breeding colonies of bank myna, Acridotheres ginginianus (Latham 1790), was conducted in Chapai Nawabganj district of Bangladesh during a period from June 2007 to October 2009. The total population in the breeding colonies was estimated as 4,452. The preferable breeding habitats of bird are bank of the river, soil heap/ditches of brickfield and holes of culvert. Environmental calamities such as bank erosion and flooding, drought and rain affect the breeding colonies. Human settlement near breeding habitats, hunting, collecting eggs and nestlings by children, and use of nets to prevent nesting at bank of the river are the main human impacts on the breeding colonies. Major threats are flood, children-fun, predators and human for its meat. Conservation awareness for this species have depicted in this paper.

Keywords: Conservation, breeding colonies, bank myna, Acridotheres ginginianus, Chapai Nawabganj, Bangladesh

Location: Department of Zoology, University of Chittagong, Chittagong, Bangladesh

Start Date: 00-06-2007

End Date: 00-10-2009

Program Area: Conservation and Biodiversity

Commodity: Animal

Objectives:

To know the interaction between local people and bank myna, threats, demark environmental and human impact on the breeding habitat of the species, and create conservation awareness for the species in Chapai Nawabganj of Bangladesh.

Methodology:

Chapai Nawabganj (formerly known as Nawabganj) is one of the Districts of Rajshahi Division in the northern Bangladesh. Originally it was a Thana of Maldaha District of the British India. After 1947 it was upgraded to a Subdivision of Rajshahi District of East Pakistan (after 1971 became Bangladesh) and eventually in 1984 all Subdivisions of Bangladesh were upgraded as Districts. Chapai Nawabganj District (24º44´00´´ North latitude and 88º12´00´´ East longitude), an area of 1,744.33 km², is bounded by West Bengal of India on the north, south and west. Rajshahi and Naogaon Districts cover the east side. The District comprises five Upazillas: Chapai Nawabganj, Shibganj, Bholahat, Gomastapur and Nachole. Part of the District lies under Barind Tract and consists of diaras and charland (sandbars develop in river bed). Main Rivers of the area are the Ganges, Mahananda, Pagla, Maraganga and the Punarbhaba. There are about 30 depressions (beels) are present in this area and the larger important ones are Vaeoa, Chatra, Kaubari, Amgachi, Baro, Charal, Kolar, Hazardighi, Damas, Bhatia, Singra, Sukrabari Damos, Maricha Dara, Putimari and Kumiradaha. The present study was carried out during a period from June 2007 to October 2009 in Chapai Nawabganj District of Bangladesh. Engine boats were used to spot the breeding colonies of the bird. Later on microbus and/or local transport were used to reach to the spots. Local assistants were engaged to collect some information also. Breeding colonies of bank myna was searched along the rivers of Chapai Nawabganj, brickfields and culverts. Searching was also done by interviewing local people. Breeding colonies visited in every month at different parts of Chapai Nawabganj District of Bangladesh. People’s interaction and threats of bank myna were assessed by prepared questionnaires and field visits. Randomly selected 100 persons were interviewed through questionnaires.

Source of Information: Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp. 49-53; ISSN 1023-6104

Article Link (Online Journal): http://journals.sfu.ca/bd/index.php/UJZRU

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Bank myna is a very common bird in the Chapai Nawabganj area. Based on questionnaire, 94% people are well known about it while 6% are not familiar. Local people have to some extent knowledge/idea about its life cycle, food and feeding habits, and its usefulness in biological control. About 79% people think that the bank myna is useful to control insect pests and 12% have no idea about its usefulness in nature and the rest 9% have no comments.

Knowledge Management: Journal