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
The Bird Is the Most Popular Finger Shellac's "At Action Park" album later that year. "XVI" is an alternate version of the song "Pull the Cup", also on "At Action Park". Both songs were recorded in Todd Trainer's loft apartment, as documented by a photographic print included with the single. The liner notes detail every musical instrument and every piece of recording equipment used on the single. The Bird Is the Most Popular Finger The Bird Is the Most Popular Finger is the third release by Shellac. The title is a parodic reference to the album "The Pigeon Is the Most Popular Bird" by Six Finger Satellite,