sentence: Birders can also take part in bird counts.
sentences_before: Although birdwatchers are amateurs, they can be very useful, because they can tell organizations such as the British Trust for Ornithology about what they have seen. It can help us to protect the birds, because we understand their needs. Some birders help with bird ringing.
sentences_after: Over 400.000 people watch the birds in their gardens for one hour and are asked to make a list of how many they see during this time. By comparing the results with other years this helps us to see which birds are surviving well, and which ones are becoming less common.
concept_name: birder
headings: Birdwatching Birdwatchers are useful
categories: Birds Hobbies