Three of the following four are a like in a certain way and so form a group. Which is the one that does not belongs to that group ?

Three of the following four are a like in a certain way and so form a

1.	Three of the following four are a like in a certain way and so form a group. Which is the one that does not belongs to that group ?
A.	Parrot
B.	Koel
C.	Vulture
D.	Swan
Answer» E.