Male nightingales that sing to defend their territory quarrel more at eye level, say scientists. During night-time singing bouts, males are known to interrupt each other’s calls and rapidly change their songs. Researchers wanted to investigate whether the birds tried to gain a height advantage by moving higher up in their chosen trees. They found that the birds were actually more aggressive when singing from branches that were at the same height.
Read full article, which was written by Ella Davies Reporter, BBC Nature