However, the critical period of food abundance, when the chicks are begging for food, is some five weeks after the initiation of egg-laying.
(the chicks; are begging; for food) (the critical period of food abundance, when the chicks are begging for food; is; some five weeks after the initiation of egg-laying)
the chicks the critical period of food abundance, when the chicks are begging for food
are begging is
for food
some five weeks after the initiation of egg-laying