On About.com, Melissa Mayntz describes that birds have funnel-shaped ears that help them hear and focus sound. Their ears are found slightly behind and below the eyes and are hidden behind soft feathers, called the auriculars, for protection.Know More
Hearing is the second most important sense for birds, Mayntz explains. The shape of a bird's head is one of the factors that affect its ability to hear. For example, owls have facial discs that direct sound toward their ears. Birds have better sound recognition skills than humans, although their frequency range is smaller. They are particularly sensitive to changes in tone, pitch and rhythm. They use such variations to identify other individual birds, even amid a noisy flock. They also rely on varying sounds, calls and songs. They recognize different noises to determine if the noise is a predator's warning, a territorial claim or an offer to share food. Some birds, such as oilbirds, use echolocation like bats do. They use fast chirps and clicks to find their way through dark caves where they live.
Birds have a good sense of hearing, but they tend to hear things differently than people, Earthlife.net explains. While humans perceive sounds through relative pitch, birds recognize sounds through absolute pitch. Furthermore, they recognize "timbre," which means a fundamental note mixed with harmonies.Learn More
Birds migrate to mate, search for food, escape harsh weather, evade predators and to flee from diseases. Birds also migrate to raise their young in a safe environment.Full Answer >
Birds are neither mammals (they don't have mammary glands) nor reptiles (they are not cold blooded), but instead belong in a grouping all their own. The bird group is one of six basic animal groups, with the others being amphibians, fish, invertebrates, mammals and reptiles.Full Answer >
Birds can be identified by both sight and sound. Identification based on sound largely involves memorization, while learning a few important field marks makes visual identification much easier. Field marks are distinctive colors, patterns or markings that help in identification.Full Answer >
Depending on the species, a bird may be a carnivore, an omnivore or an herbivore. Larger birds with sharp talons are more likely to be carnivores, while small birds with beaks built for cracking nuts are more likely to be herbivores.Full Answer >