This is the 486th most frequent Italian word.
nelle
"In the" (feminine plural).
In this context, 'nelle' is a contraction of 'in' and 'le', used to say 'in the' for feminine plural nouns, 'chiome' referring to treetops.
Gli uccelli costruiscono i nidi nelle chiome degli alberi.
The birds build their nests in the treetops.
'Nelle' here indicates the location 'in the' for the feminine plural noun 'corolle', meaning the flower parts.
Le api raccolgono il nettare nelle corolle dei fiori.
Bees collect nectar in the corollas of flowers.
'Nelle' shows the relationship or location 'in the' and is used before the feminine plural noun 'ricette', meaning recipes.