Southern rockhopper penguin first noted. Their breeding colonies are located from sea-level to cliff-tops and sometimes inland. Their breeding season starts in September and ends in November. Two eggs are laid but only one is usually incubated. Incubation lasts 35 days and their chicks are brooded for 26 days. Foraging behavior in penguins varies across ecological conditions. Rockhopper penguins are present at a variety of climates and locations; Amsterdam Island's (AMS) subtropical waters, Kerguelen Archipelago's (KER) subarctic coastal waters, and Crozet Archipelago's (CRO) subantarctic coastal waters. Due to the species plasticity they are able to express different strategies and foraging behaviors depending on
What Bird is That? all-time best seller in Australian natural history and is still in print today. While sales and stature of Cayley’s original collection continued to grow, the prolific artist and ornothologist Cayley was working on a much more ambitious project – his so-called “big bird book”. From about 1918, he was creating illustrations of subspecies, plumage stages and eggs (now lost) of all known Australian birds. The project was incomplete at the time of his death in 1950, although the illustrations were all but finished. The ornithologist Terence Lindsey revived Cayley’s plans in the 1980s, creating the last and most significant revision