Read the following text and fill in the blanks with suitable word from the box. There are more words than needed. Make any grammatical change if necessary. requiring provide interesting enthusiast factors ecology worship season doing extinction habitat importance environment time Bird-watching has been a favourite pastime for many nature-lovers. In the past, some birds (a) ——as messengers of the gods. Bird watching these days (b)—— for the fun of finding out more about our feathered friends. In recent years, birds have become the barometers of (c)——-changes around us. Bird watchers have made (d) ——- contributions towards (e)—— information about which birds have vanished from which areas or become (f) ——altogether. They even are trying to find out the factors which are having bad effects on their (g)———- Bird-watching (h)———, a lot of perseverance and might cover days, months or years, through summer or winter, heat or rain to observe (i)—— habits of birds. Real (j)——-have even gone to remote islands to observe birds. Bird-watching is quite well-known in many countries of the world