Fig. 4
From: How animals distribute themselves in space: energy landscapes of Antarctic avian predators
Frequencies of foraging costs per bottom time gain. Data are shown in J kg-1 s-1, for short (a) and long trips (b) carried out by gentoo penguins Pygoscelis papua breeding at Devils Point, Byers Peninsula, Livingston Island, South Shetland Islands during chick guard (December 2016), chinstrap penguins Pygoscelis antarcticus (c) breeding at Vapour Col rookery, Deception Island, South Shetland Islands, during chick guard (January 2017), and for gentoo penguins, breeding on New Island, Falkland / Malvinas Islands, at the South End colony, during the 2013 breeding season (d), at the North End colony during 2014 (e), and at the South End colony during 2014 (f)