Question about dead people and reincarnation! Please take a look!?

3 days ago, one of my best friend died, at age 23, he was also my sister's friend and they were preparing to marry, now a bird keeps coming near my window and starts singing, i think its a blackbird (its name) its black and has a yellow face, it just keeps singing and wont leave, whatever i do it wont stop, do you think he might reincarnate in this bird? my sister loved him very much, and he loved my sister the same...they were a perfect match