Bird transport the plants' seds,and they plant great green forests for us.The trees an fruits will be eaten up without birds,Flight is the thing theny can do that no other animals can.Though plane has been invented,man can still learn flight and design skill from birds.When birds leave,that should serve as a warning to us.Be a good child to protect birds and environment,only in this way can we have a beautiful and harmoious homestead all the time.
