Bird on birth announcements (5)
I believe the answer is:
stork
'bird on birth announcements' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for stork that I've seen before include "Mythological baby-bringer" , "The baby bird, so to speak" , "Large wading bird" , "Baby-carrying bird?" , "Bird that delivers babies?" .)