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,
Bird Creek Creek and had threatened to close some of the oil wells nearest the site. Bird Creek Bird Creek is a stream in northeast Oklahoma. The main creek is formed from the waters of North Bird Creek, Middle Bird Creek, and South Bird Creek, all of which rise in Osage County. The South and Middle branches of the creek converge at Bluestem Lake. Outflow from the lake is called Middle Bird Creek. North Bird Creek joins Middle Bird Creek northwest of Pawhuska, and from that point on is simply Bird Creek. From Pawhuska, the creek flows southeastward and eastward through the