Gander appears with eagle's wings (4-3)
I believe the answer is:
look-see
'gander' is the definition.
(I've seen this before)
'appears with eagle's wings' is the wordplay.
'appears' becomes 'looks' ('look' can be a synonym of 'appear').
'with' means one lot of letters go next to another.
'wings' means to remove the middle letters (the wings or edge letters of the word are used).
'eagle' with its centre taken out is 'ee'.
'looks'+'ee'='LOOK-SEE'
(Other definitions for look-see that I've seen before include "Inspection (colloq.)" , "Young's - relates stress and strain (Physics)" , "Dekko" , "Survey, inspection" , "Brief inspection" .)