Have the parents evaluated the relative inaccessibility of the metal frame by terrestrial predators (mammals and snakes)? but what about aerial ones (kestrel, owls)? nest and parents' movement are visible from far away.
Have the parents evaluated the relative inaccessibility of the metal frame by terrestrial predators (mammals and snakes)? but what about aerial ones (kestrel, owls)? nest and parents' movement are visible from far away.