Spiders are among the oldest and most successful land predators, with a fossil record much earlier than dinosaurs. All spiders are preeminent craftsmen, producing silks that can be even stronger than steel in strength-to-weight ratio. When woven into a web, the animal architecture functions as... click to read more

Many birds communicate using songs. Among them, the Ecuadorian Hillstar hummingbird produces a song with the highest pitch. Our previous research suggests that these hummingbirds produce high-pitch sounds to stand out from ambient noise. For vocal communication to be effective, the listener needs to hear the... click to read more