choir
Some Crows Hit On Dead Companions
About 5 percent of crows will attempt to copulate with other crows that have joined the choir invisible. Learn more about your ad choices. Visit megaphone.fm/ad…
Sing Solo for Higher Fidelity
By tracking duetting choir singers, researchers found that when an individual singer's pitch drifts off tune their partner’s tend to too. Christopher Intagliata…





