Summarize this article in one sentence.
Before a storm, ants will build up their mounds and create steep sides. If you see raised ant beds, especially if they were lower before, then there may be a storm coming. When the air pressure falls before a storm, birds feel discomfort in their ears. This causes them to fly lower toward the ground or to perch on lower tree branches or power lines. You may also observe the birds eating ground insects. This behavior suggests that a storm is coming.  If the birds are flying high in the sky, then there will likely be fair weather. If you’re near the sea, look for seagulls perched on the beach, which could indicate that a storm is coming. Watch for large groups of roosting birds. Birds also become quiet before a storm. Singing and chirping birds could indicate good weather. Birds can sense air pressure and will time their migrations to good weather. If you see flocks of birds migrating in the sky, then the weather will likely be good that day. If a storm is going to be short, birds will usually wait for the rain to end before looking for food. If you see birds eating during a storm, then it will likely last for a long time. Birds can sense the pressure patterns, allowing them to predict the weather. Bees and butterflies return to their homes before a storm for safety. In the case of bees, they also work to preserve the hive. If you don’t see any bees and butterflies when you would expect to - such as in a field of flowers - then there may be a storm coming. Cows usually gather together and lie down in their pasture before a rainstorm. This is likely because it cools down before a storm, and cows like to be close to the ground when the weather cools. Cows lying on the ground is an indication that it may rain. This only applies to cows, not other livestock. Snakes will leave their nests before bad weather, even if it’s in the middle of wintertime. Seeing snakes in unexpected places or at a time when the snake would normally be in its nest can be a sign of bad weather.  Snakes can even predict earthquakes. If you see a snake out of its nest behaving erratically, there could be an earthquake coming.  Snakes usually come out of their nests in sunny weather to warm themselves. They don't like the cold because they are cold-blooded. A snake out of its nest when it's not a warm, sunny day is an indication that bad weather is coming. Tortoises will seek higher ground before a storm, so look for movement to higher locations. You may see them in the road one to two days before a rain.

Summary:
Look for high ant mounds. Watch for low-flying or roosting birds. Look for bird migrations. Notice if birds eat during a storm. Search for bees and butterflies. Check cow pastures to see if they are lying down together. Look for snakes. Watch tortoises if they are nearby.