My Guineas escaped thier cage.. Can i leave them in the garden?

[KaleDaDuck]

So i have 5 guineas and a baby chick im not sure how old are they but id say 2.5 months.. This is the second time they escaped the cage.. (btw its impossible and i mean impossible to catch those guys) so yesterday i cleaned thier cage gave them plenty of food and drinks and a watermelon and oh boy i closed the cage so good i thought they couldnt open it, but the next morning thhhee next moornin.. My heart almost dropped when i saw no chicks in the cage i gone to panic mode searching all around the garden.. Eventually i found them.. I though that a cat murdered them but lucky keets.. Since they survived 2 nights without getting harmed or even touched should i keep them in the cage or put them outside?

 

[15WildTurkey]

Are they just loose free ranging or loose in a pen?

 

[KaleDaDuck]

Are they just loose free ranging or loose in a pen?

The cage is kind of as big as a microwave but slightly bigger the free range id guess its 9 meters long and 6 meters wide..