This bird, among others, gets breadcrumbs (9)
I believe the answer is:
redbreast
'this bird' is the definition.
(redbreast is a kind of bird)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for redbreast that I've seen before include "Type of robin" , "Bird" , "One tweets" , "Flapper" .)