Common cuckoo lay eggs that better imitate the host's eggs, the host species adapts and is more able to distinguish the cuckoo egg. A study of 248 common cuckoo and host eggs demonstrated that female cuckoos that parasitised common redstart nests laid eggs that matched better than those that targeted dunnocks. Spectroscopy was used to model how the host species saw the cuckoo eggs. Cuckoos that target dunnock nests lay white, brown-speckled eggs, in contrast to the dunnock's own blue eggs. The theory suggests that common redstarts have been parasitised by common cuckoos for longer, and so have evolved to be better
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,