Collared Pratincole; Canastera

Not certain if these are breeding here but they usually do. In the second picture there is a Common Tern in the far left corner with an egg in front of it. In the centre there is a chick with its bill almost buried in the ground and another amost hidden to its left, while there is a pratincole in the right foreground. The chick could belong to either, I cannot tell without seeing a young with its parents.