検索キーワード： 動物学

Late in 2013, snowy owls started showing up in places no one expected to find them - including Florida. What had caused so many of these majestic birds to leave their Arctic home and fly to southern Canada and the United States? Scientists quickly began working to find out. Author Sandra Markle brings together firsthand reports from the scientists involved along with stunning photographs of the owls to explain this rare event, known as an irruption.

In Elkhorn Slough, an inlet on the California coast, seagrass grows healthy and strong in the shallow water. This healthy seagrass baffled marine biologist Brent Hughes. The scientist expected this estuary to be overrun with algae, causing the seagrass to die. Why was the seagrass thriving? As Brent investigated, signs pointed to an unexpected player helping to keep the seagrass healthy: sea otters! What do these top predators have to do with an aquatic grass at the opposite end of the food chain?

Crack, crack...animal babies are hatched all over the place. Can you figure out who's who? The text hints at what the eggs contain: "Hidden in a rock cave / Deep beneath the ocean waves / Their mother wraps her long arms around / To keep these eggs safe and sound." The observant young nature lover will find a visual clue of what animal the mother might be. The next spread provides the answer - in this case, it's an octopus. The second spread also provides fascinating facts about the species.

Oahu tree snails and pink velvet worms are two examples of endangered invertebrates. Few of them exist in the wild. Other invertebrates have already gone extinct. What hurts these animals? What can you do to help? Listen to this book to find out!

Learn what a Siberian tiger has in common with an elk. Discover what sets a Siberian tiger apart from a Tasmanian devil. Listeners will compare and contrast key traits of Siberian tigers - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Find out what a platypus has in common with a beaver or a dolphin. Learn what sets a platypus apart from a giraffe or a wild dog. Listeners will compare key traits of platypuses - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Learn what a mountain gorilla has in common with a hippopotamus. Find out what sets a mountain gorilla apart from a raccoon or a mountain lion. Listeners will compare key traits of mountain gorillas - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Discover what a humpback whale has in common with a gibbon or a caribou. Learn what sets a humpback whale apart from a hedgehog or a sloth. Listeners will compare key traits of humpback whales - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Discover what a grizzly bear has in common with a jaguar. Find out what sets a grizzly bear apart from an armadillo. Listeners will compare and contrast key traits of grizzlies - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Find out what a gray wolf has in common with a red fox or an African lion. Discover what sets a gray wolf apart from a manatee or a giant panda. Listeners will compare and contrast key traits of gray wolves - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Find out what an African elephant has in common with a wildebeest. Learn what sets an African elephant apart from a snow leopard. Listeners will compare and contrast key traits of African elephants - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

How does a robin know when to feed her chicks? Who teaches young otters how to swim? Join Ms. McLean's class on a field trip to the zoo to find out! They're keeping track of patterns in animal behavior by observing different species and recording what they see. Learn to watch for the behavior patterns of wildlife in your backyard!

What is an amphibian? Frogs, toads, and salamanders and are all amphibians!

What is a fish? Stingrays, goldfish, sharks, and many other creatures are all fish!

Are zombies real? As far as we know, dead people do not come back to life and start walking around, looking for trouble. But there are things that can take over the bodies and brains of innocent creatures, turning them into senseless slaves. Meet nature's zombie makers - including a fly-enslaving fungus, a suicide worm, and a cockroach-taming wasp - and their victims.

Honeybees are a crucial part of our food chain. As they gather nectar from flowers to make sweet honey, these bees also play an important role in pollination, helping some plants produce fruit. But large numbers of honeybees are disappearing every year...and no one knows why. Is a fungus killing them? Could a poor diet be the cause? What about changes to bees' natural habitat? In this real-life science mystery, scientists and beekeepers are working to answer these questions...and save the world's honeybees before it's too late.

Simple science text gives a close-up account of the fascinating world of the dung beetle. When an animal lightens its load, dung beetles race to the scene. They battle over, devour, hoard, and lay their eggs in the precious poop. Dung is food, drink, and fuel for new life - as crucial to these beetles as the beetles are to many habitats, including our own.

Few activities grip our attention more than animal watching. Dolphins and seals bring us much joy, and sharks and alligators hold us in awe. But animals can also prompt a variety of fascinating questions. Why do dolphins sometimes surf? How well can birds of prey actually see? Why do giant pandas eat bamboo fast food? Why are cavities essential to one reptile's survival? What effect can a slight temperature change have on alligator hatchlings? How can some seals stay underwater so long and dive so deeply without harm?

When the platypus was first discovered by Europeans in the 1800s, it was well-known by Australian Aborigines - but no one knew how to classify it. It lived in the water and laid eggs like a reptile, had a bill like a bird, and was furry and warm-blooded like a mammal. Scientists had to come up with a way to solve this and many other mysteries of nature. Alaskan Polar bears sleeping in hidden underground dens caused problems for researchers wanting to drill for oil without disturbing the bears. Find out how scientists used infrared imaging to see the caves beneath the snow.

These are the adventures and discoveries of the scientists who revealed the secrets of the Komodo dragon. This strange creature inspired myth and legend, luring brave souls into the forests of Indonesia to see if the tales were true. In the end, it attracted scientists, who unraveled the mysteries of how such a remarkable creature could exist, how it uses the deadly germs in its saliva to its advantage, and how those microbes may lead to cures for stubborn diseases.