I've been trying to complete the "chicken flies the coop" quest at the Bartali farm. I obtained the quest, however, when I squat and approch a chicken it never lays an egg. They also dissappear and reappear a short distance away and I have to approach it again. This happens over and over with no success in obtaining eggs or chickens. Any tips would be great.

Heya, the trick with this quest is to stay from a certain distance away in one spot from the chicken. the game will give you a pop-up if you're too close. Also make sure that you aren't following the chickens that are callded "Runaway" chickens, but the bigger chickens. :)

What should I do if no chickens spawn?

They spawn around 6am game time and disappear at 7am game time if i remember right, or sometime around there