Their coop is becoming emptier and emptier. Babs collects their scarves from their bare nests. No more eggs.
Mrs. Tweedy will buy a new batch of chickens to take over their empty nests. Babs will make a new set of scarves and hats. Someone, probably Ginger will warn them about the daily egg requirements.
A hat and scarf will not reduce their worry, their stress, but she tries. For her, knitting makes egg laying easier. It demands complete focus lest her scarf wind up in the scrap pile. As the escape plans increase, so do her knitting mistakes.
Bunty complains about her piles cluttering their coop, but it keeps her from becoming dinner.