Complex sentence: Headed by Stewart D. Macdonald, Curator of Vertebrate Ethology at the museum, the camp was staffed by up to four biologists whose main objective was to study the endangered ivory gull.
Split into simpler sentences: Headed by Stewart D. Macdonald, Curator of Vertebrate Ethology at the Museum, the station was staffed by two to three biologists. Their main objective was to study the endangered ivory gull.