While many species work together to forage, spectral bats (Vampyrum spectrum were previously believed to be more solitary when finding food. With a wingspan of up to three feet and a taste for rodents, insects, and even other bats, spectral bats are the largest carnivorous bats in the world. Prey sharing behavior is a key social behavior for spectral bats. Prey sharing behavior is a key social behavior for spectral bats. Social roosting of the spectral bats.