never been a slew of birds eating up the slew of worms.
several possible explanations spring to mind:
a.You would agree that a big slew of worms is a rare event in itself. Let's say probability 0.001. If the probability of a slew of birds is the same, the joint probability is 1 millionths, i.e. rather unlikely.
b.The buildup of a large accumulation of worms was only possible because birds were absent at the moment.
c.As far as I am concerned, my appetite is not stimulated by a plate filled to the brim.