Common cuckoo lay eggs that better imitate the host's eggs, the host species adapts and is more able to distinguish the cuckoo egg. A study of 248 common cuckoo and host eggs demonstrated that female cuckoos that parasitised common redstart nests laid eggs that matched better than those that targeted dunnocks. Spectroscopy was used to model how the host species saw the cuckoo eggs. Cuckoos that target dunnock nests lay white, brown-speckled eggs, in contrast to the dunnock's own blue eggs. The theory suggests that common redstarts have been parasitised by common cuckoos for longer, and so have evolved to be better
Laughing Bird Caye in the central lagoon of the Belize Barrier Reef. Laughing Bird Caye is a long island that sits on an unusually long narrow ridge of reef called a faro. A faro is an angular atoll on a continental shelf, which is also called a shelf atoll. Similar to other atolls, a faro has a steep drop off and has a central lagoon enclosed in the reef. This Laughing Bird Faro is separated from the mainland and the barrier reef by deep channels all around the faro. Laughing Bird Caye is a unique island structure in which its uniqueness adds to