Bird watching
Have you ever been bird watching? When walking through nature, pay attention to how many species of birds you can find! Soon you will notice that each bird has its own characteristics, colours and sound. You may not know the name of each bird, but your this is already the beginning of bird watching! Furthermore, the great thing about birdwatching is that you need virtually nothing for it. It can be handy to bring binoculars but it is not a must!