| population regulation in magellanic penguins: what determines changes in colony size? | seabirds are often studied at individual colonies, but the confounding effects of emigration and mortality processes in open populations may lead to inappropriate conclusions on the mechanisms underlying population changes. magellanic penguin (spheniscus magellanicus) colonies of variable population sizes are distributed along the argentine coastline. in recent decades, several population and distributional changes have occurred, with some colonies declining and others newly established or incre ... | 2015 | 25786254 |