Nedko Petkov Nedyalkov. National Museum of Natural History, Bulgarian Academy of Sciences, Sofia, Bulgaria. Senior Assistant, PhD, curator. PhD, 2014. Diet composition of the peregrine falcon (Falco cherrug gray, 1834) depending on the abundance of prey. National Museum of Natural History/Bulgarian Academy of Science. Twenty years of work for the conservation and systematics of birds and mammals. Scientific interests: ecology, conservation, taxonomy, and evolution of small mammals; feeding biology of birds of prey and owls.