Dunnock the female. Males try to ensure their paternity by pecking at the cloaca of the female to stimulate ejection of rival males' sperm. Dunnocks take just one-tenth of a second to copulate and can mate more than 100 times a day. Males provide parental care in proportion to their mating success, so two males and a female can commonly be seen provisioning nestlings at one nest. Other mating systems also exist within dunnock populations, depending on the ratio of male to females and the overlap of territories. When only one female and one male territory overlap, monogamy is preferred. Sometimes,
Common crane Waterbirds" (AEWA) applies. In Ireland, despite being extinct for over 200 years, the common crane plays a very important part in Irish culture and folklore and so thus recent efforts to encourage it back to Ireland are received with much enthusiasm. The Kranich Museum in Hessenburg, Mecklenburg-Vorpommern, Germany, is dedicated to art and folklore related to the common crane. The common crane is the sacred bird of the god Hephaestus, and it features heavily in the god's iconography. Common crane The common crane ("Grus grus"), also known as the Eurasian crane, is a bird of the family Gruidae, the cranes.