Dunnock relatively lower success for females. In times of scarcity, female territories expand to accommodate the lack of resources, causing males to have a more difficult time monopolizing females. Hence, females gain a reproductive advantage over males in this case. The dunnock possesses variable mating systems. Females are often polyandrous, breeding with two or more males at once, which is quite rare among birds. This multiple mating system leads to the development of sperm competition amongst the male suitors. DNA fingerprinting has shown that chicks within a brood often have different fathers, depending on the success of the males at monopolising
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