Hang on to some eggs (6)
I believe the answer is:
clutch
I believe this is a double definition.
'hang on to' is the first definition.
(I've seen this before)
'some eggs' is the second definition.
(group of bird eggs)
(Other definitions for clutch that I've seen before include "A set of eggs for hatching - grasp eagerly" , "Grip part of the car-engine" , "Quantity of eggs: cling to" , "Hang on to" , "Result of laying" .)