Loranchet Peninsula of Grande Terre it is infested with introduced feral cats, rats and rabbits. Human visitation is infrequent. The northern end of the peninsula, and the northernmost part of Grande Terre, extending northwards from the head of the Baie de la Dauphine, has been identified as a 60 km Important Bird Area (IBA) by BirdLife International because of its breeding seabirds. At least 23 bird species breed in the IBA. As well as a colony of 250,000 pairs of macaroni penguins at the tip of the peninsula, there are also 5,400 pairs of southern rockhopper penguins and a small colony of
Bird egg the shell immediately before laying, but this research shows coloration is an integral part of the development of the shell, with the same protein responsible for depositing calcium carbonate, or protoporphyrins when there is a lack of that mineral. In species such as the common guillemot, which nest in large groups, each female's eggs have very different markings, making it easier for females to identify their own eggs on the crowded cliff ledges on which they breed. Bird eggshells are diverse. For example: Tiny pores in a bird eggshell allow the embryo to breathe. The domestic hen's egg has around