This is the 10841st most frequent Polish word.
dzikich
"Wild" or "of the wild."
The word 'dzikich' describes the animals as 'wild' in a plural genitive form.
W lesie widziałem dzikich zwierząt ślady.
In the forest, I saw traces of wild animals.
Here, 'dzikich' qualifies 'plemionach', meaning 'wild' in the plural locative form.
Legendy opowiadają o dzikich plemionach zamieszkujących te tereny.
Legends tell of wild tribes inhabiting these lands.
In this context, 'dzikich' is used to describe 'birds' in the plural genitive form as 'wild'.