And where it's landing to bring the twigs to the cliff, its feathers brushes the rock -- and it had cut the rock six to eight inches in. There was a cleft in the rock by the brushing of the feathers of generations of the birds.
I on aterra per portar les branquetes al penya-segat, les plomes freguen la roca, i s'havia fet un solc a la roca, de 10 a 15 cm. S'havia fet una fisura a la pedra amb el frec de les plomes de generacions d'ocells.