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
Wandsworth Common Wandsworth Common Wandsworth Common is a public common in Wandsworth, in the London Borough of Wandsworth, south London. It is and is maintained and regulated by Wandsworth Council. It is also a Ward of the London Borough of Wandsworth. The population of the ward at the 2011 Census was 15,247. There are a number of ponds and a lake, which can be used for fishing (with a permit). The lake is partially fenced off for the benefit of bird life, while other areas feature wooden pedestrian board walks, or open water's edge access. A small brick bridge crosses over the