Bill Oddie has given Twitter a more literal meaning today as he translated bird calls into tweets at ZSL London Zoo.
The naturalist and head bird-keeper Adrian Wallis interpreted the chirps of the aviary's tropical residents and summarised the results in 140 characters. The event was held to mark the beginning of the migration season for the bird world.
Oddie said trained ears can pick up differences that can alter the meaning of a bird call.
Tweets from Oddie, under the hashtag #BirdsThatTweet, included: