The black bear is a medium-sized bear endemic to North America. It is the continent's smallest and most widely distributed bear species. They are omnivores, with their diets varying greatly depending on season and location. Bears use the same vocalizations with humans as with other bears: jaw-popping, woofing, low grumbles and moans. These sounds are rarely a sign of aggression, more often a signal that the bear is concerned, nervous or merely upset at what's going on.

The song of the blackbird is arguably the most beautiful and best-loved of any British bird, as well as being the most familiar. It is the first bird Martyn every recorded at the age of 11 in the woods near Birmingham so it has a special place in our hearts. They are super adaptable - at home in the town or remote welsh countryside. The only European country with no breeding blackbirds is Iceland. The first songs start at the end of January and are led by the cocks hatched the year before.

The coyote is a species of canine native to North America. They are savvy and clever and whilst they once lived primarily in open prairies and deserts, they now roam the continent's forests and mountains. Coyotes make lots of noises at night. They are influenced by the light of the moon and use it to their advantage when communicating. In the wild, coyotes use howling to communicate with one another when other prairie wolves are nearby. Believe it or not, coyotes don't typically howl at the moon.

Geckos are mostly small, usually nocturnal reptiles and found on every continent except Antarctica. They have adapted to habitats from rain forests, to deserts, to cold mountain slopes. They use sound as a way of communicating to each other or sending warning calls. We can't hear everything they say, but most commonly we hear the soft chirping or chapping.

Gila Woodpeckers have a knack for thriving in the nearly treeless desert habitats of the southwestern U.S. and Mexico. Sometimes known as brash and noisy their call is like a rolling churrr - a rolling series of notes on one pitch, similar to the commonest call of Red-bellied Woodpecker or Northern Flicker. Both sexes give this call, but males tend to call more frequently.

A lightning bolt takes only a few thousandths of a second to split through the air. The loud thunder that follows is said to come from the bolt itself, however, it actually comes from the rapid expansion of the air. The heat from the electricity created by the lightning raises the temperature of the surrounding air to around 27,000 C° (48,632 F°). This creates a rapid increase in the air pressure and the heated air explodes outward with a loud, booming burst of noise sent in every direction.