The British Trust for Ornithology (BTO) is an organisation founded in 1932 for the study of birds in the British Isles. William, Prince of Wales has been patron since October 2020. The BTO carries out research into the lives of birds, chiefly by conducting population and breeding surveys and by bird ringing, largely carried out by a large number of volunteers. Its Garden Birdwatch survey, for example, allows large numbers of birdwatchers to participate, by making a weekly count of the birds they see in their gardens. More information...
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