Of late I have been hearing the calls of many new birds which I have not heard before. I keep running to the window to catch sight of the birds. There is one which sounds like the loud croaking of a frog. This bird keeps calling out only to be replied to by another of its kind from nearby. Have not been able to spot the bird. May be it is very nicely camouflaged. However when looking for this bird, I spotted another flying really fast the other day. Going by the colour, I thought it was a parrot. This morning when looking for the other bird, I saw what I thought was a parrot and was surprised to see a completely different bird. It had a parrot green body, a brown head and a yellowish beak. I managed to take a picture of it, but was not able to get a very good one as it did not stay too long. The colours in the photo are nowhere as vivid as the real colours. Was wondering if anyone would be able to tell me anything about this bird. Later I saw an even smaller bird which was a dull green with a light brown head. Could not get this bird as it was very small and by the time I could focus and zoom it just flew off. Can anyone tell me what birds these could be? Have been searching Google, but it seems to be an endless search. Did not see "my" birds.