Nicolas Olejnik is a birdwatching guide and a part of the Buenos Dias Birding staff. With a profession as a paleontologist and a fossil preparatorat the Buenos Aires Museum of Natural Sciences and experience in works with birds, mammals, reptiles and artrophods all over Argentina. Nicolas stands to be not just an experienced birding guide but a traditional naturalist that spends his time in studying arthropods, biodiversity and biogeography. After living in the atlantic rainforest for a year and having done scientific trips to many argentinian provinces during the last ten years he has discovered new species for the country and has wrote scientific publications about many different groups of vertebrates and arthropods. As a birding guide he has taught lectures for Aves Argentinas (Birdlife international partner in Argentina) and has guided in every argentinean region.