Turnéts

Turnéts are a type of territorial marker used by species of birds, particularly seabirds and waterfowl, to communicate and establish territories. These markers are typically in the form of clumps of vegetation, rocks, or other objects that are deposited in specific locations by birds. The purpose of turnéts is to advertise an individual's presence and territory to other birds, serving as a visual and olfactory cue that helps to deter intruders.

Turnéts are an important component of the mating and breeding behaviors of many bird species. They are often created by males, who use them to attract mates and defend their territories from other males. The choice of location and density of turnéts can also be an important factor in attracting a mate or securing a specific breeding home. In some species, turnéts are used in combination with vocalizations and visual displays, such as courtship rituals, to help establish dominance and pair bonds.

Studies have shown that the construction and maintenance of turnéts can be energetically costly for birds, particularly when they are breeding in high-density populations. However, the benefits of maintaining a territory and attracting a mate often outweigh these costs. Various species of birds have been observed to display a range of turnét construction behaviors, from simple arrangements of pebbles to complex displays of mud and twigs. Turnéts provide valuable insights into the reproductive strategies and territorial behaviors of birds.