Macaroni penguin chicks grow older; a 2008 study that used surgically implanted data loggers to track the movement of the birds showed the foraging trips become longer once the chick-rearing period is over. Birds venture out for 10–20 days during incubation and before the moult. Macaroni penguins are known to be the largest single consumer of marine resources among all of the seabirds, with an estimated take of 9.2 million tonnes of krill a year. Outside the breeding season, macaroni penguins tend to dive deeper, longer, and more efficiently during their winter migration than during the summer breeding season. Year round, foraging
The Bird with the Crystal Plumage but finds only another dead end. As he makes his way back to his apartment, Julia is attacked by the same black-gloved figure, but Sam arrives home just in time to save her and the assailant escapes. Sam starts to receive menacing phone calls from the killer, from which the police manage to isolate an odd cricketing noise in the background, which is later revealed to be the call of a rare breed of bird from Siberia, called "The Bird with Crystal Plumage" due to the diaphanous glint of its feathers. This proves important since the only one of its