temperature, food supply, or the amount of daylight. Mammals, insects, fish, and birds all migrate. Marshes - An area of soft, wet, low-lying land, characterized by grassy vegetation and o... ... middle of paper ... ... As you can see Harry has a great time bird watching and looks forward to his adventures, never really knowing on a particular day what he is going to see. Things change on a daily basis and what you see today may not be what you see tomorrow! And there is so much to look at! The