House Crow (Corvus splendens) Population Survey and Management

7 July 2017, Thimphu: The Nature Conservation Division in Collaboration with the Ugyen Wangchuck Institute for Conservation and Environmental Research has initiated a house crow population survey in Thimphu city area from yesterday, 6 July, for three days using transect method during early morning and evening. Through this survey, the crow population and major congregation sites in Thimphu will be mapped.

The house crow is native to India, nearby parts of Asia and the Middle East. Earlier, house crows have been deliberately introduced to new areas supposedly as an aid to cleaning refuse from towns. Today, house crows have become established in more than 28 countries outside their native range. House crows are globally regarded as invasive species, known agricultural pests, detrimental to native bird species and carriers of number of human enteric disease organisms.

In Bhutan, house crows are normally distributed along the southern region in urban areas bordering India. However, in the recent past they have started inhabiting the areas northward where they were never found before.

From the survey results, short term interventions like trapping and translocation of birds to the natural habitats will be carried out and nest destruction and site specific waste management will be adopted as long term measures.

– Wildlife Conservation Division

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