Birds may fight harder when there's an audience
Birds of both the same and different species will watch a fight and can influence the fighters, something called the “audience effect.” An example of the audience effect in humans, when the audience can affect competitors, is a sports team’s home field advantage. “Because the audience effect has been a focus of human research for so long, animal researchers started observing the same behavior in fish and birds and many other species,” says Katie Sieving, a professor at the University of Florida. “But until now, animal research on this topic nearly always considered audience effect...
Source: futurity.org
