This is the 12116th most frequent Polish word.
lęgowy
"Related to nesting or breeding."
Here, 'lęgowy' describes the birds that are breeding or nesting, highlighting the particular season or context of this activity.
Ptaki lęgowe budują gniazda wiosną.
Breeding birds build nests in spring.
'Lęgowy' is used to qualify the ducks that inhabit the lake specifically for laying eggs and nesting.
To jezioro jest ważnym miejscem dla lęgowych kaczek.
This lake is an important place for breeding ducks.
In this sentence, 'lęgowy' refers to areas designated for breeding, emphasizing habitats needed for the reproductive periods of animals.