The Birds Finally Take Off

The high-pitched noises did, in fact, provoke a reaction from the birds, which consisted of a flight back into the forest where they belonged.

If the guards stopped what they were doing at the moment, it was possible that the birds might come back. The guards were aware of this possibility. This was their opportunity to assure that the aeroplane could be hauled out of the water, and they made the most by taking advantage of the situation.