Large groups of birds around Land's End (6)
I believe the answer is:
crowds
'large groups' is the definition.
The answer and definition can be both groups as well as being plural nouns.
Perhaps there's an association between them I don't understand?
'birds around land's end' is the wordplay.
'birds' becomes 'crows' (crow is a kind of bird).
'around' indicates putting letters inside.
'end' says to take the final letters.
The final letter of 'land' is 'd'.
'crows' going around 'd' is 'CROWDS'.
'of' is the link.
Can you help me to learn more?
(Other definitions for crowds that I've seen before include "Swarms" , "Hordes" , "Hosts" , "Large numbers of people" , "huge turnout?" .)