Bird needing second mudbath? (7)
I believe the answer is:
swallow
'bird' is the definition.
(I know that swallow is a type of oscine)
'second mudbath?' is the wordplay.
I cannot really understand how this works, but
'second' could be 's' (common abbreviation) and 's' is found within the answer.
The remaining letters 'wallow' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'needing' is the link.
Can you help me to learn more?
(Other definitions for swallow that I've seen before include "Fall for; bird" , "Fork-tailed bird" , "Eat or drink" , "Bird - drink" , "Get down" .)