'Dens' in the Bible

when they are crouched in the dens, [when] they lie in the thicket in an ambush?

[When] the sun rises, they gather together and lie down in their dens.

And Jesus said to him, "Foxes have dens and birds of the sky [have] nests, but the Son of Man has no place to lay his head."

And Jesus said to him, "Foxes have dens and birds of the sky [have] nests, but the Son of Man has no place to lay [his] head."