--- title: Migration and hibernation — a lesson of Mova's school · trees and pragmatics description: «Migration and hibernation», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Winter is hard for animals: it is cold, days are short, and food like insects, fruit and fresh leaves becomes scarce, though seeds and nuts can st --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Migration and hibernation # Migration and hibernation Lesson 28 of the world course of Mova's primary school: 17 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/28-migration-and-hibernation/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/0/) — Winter is hard for animals: it is cold, days are short, and food like insects, fruit and fresh leaves becomes scarce, though seeds and nuts can still be found. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/1/) — Some animals migrate: they make a long journey to a place with more food and better weather, and come back later; swallows fly from Europe to Africa each autumn and return in spring. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/2/) — Some animals hibernate: they go into a deep sleep in a sheltered place, their body cools down, their heart beats slowly, and they live on fat stored in autumn. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/3/) — Others stay active and change: they grow thicker fur, store food like squirrels do, or change colour, like the Arctic hare that turns white for the snow. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/4/) — A hedgehog curled up in a pile of leaves in winter may breathe only a few times a minute; it is not just sleeping, its whole body has slowed down to save energy. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/5/) — Migration is a long journey animals make to find food, warmth or a place to have young. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/6/) — Many birds, such as swallows and storks, migrate south in autumn and return in spring. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/7/) — Migrating birds find their way using the Sun, the stars, landmarks and the Earth's magnetism. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/8/) — The Arctic tern makes one of the longest migrations, flying from the Arctic to the Antarctic and back every year. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/9/) — Whales, salmon, wildebeest and some butterflies also migrate. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/10/) — Hibernation is a long, deep winter sleep in which the body temperature drops and the heart beats slowly. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/11/) — Hedgehogs, dormice, many bats and ground squirrels hibernate. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/12/) — Before hibernating, animals eat a lot to store fat, which keeps them alive through the winter. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/13/) — Waking up in the middle of hibernation uses up a lot of the stored fat, so a hibernating animal should never be disturbed. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/14/) — Bears sleep for months in winter, but their body cools only a little, so many scientists call it a lighter winter sleep. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/15/) — Frogs and many reptiles become very slow and still in winter because they cannot keep themselves warm. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/28-migration-and-hibernation/16/) — Some animals stay active in winter by storing food, growing thicker fur or changing colour. - ← previous: [Habitats and adaptations](https://md.mova.elamur.ai/free/en/corpora/school/world/27-habitats-and-adaptations/) - next →: [Classifying unusual animals](https://md.mova.elamur.ai/free/en/corpora/school/world/29-classifying-unusual-animals/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)