Train tracks still pose challenges to conservationists. Many bears have been killed by trains, often because they are attracted to grain spills along the tracks. Transportation corridors provide openings for plants which are also utilised by bears. A partnership between Parks Canada and Canadian Pacific Railway allowed the creation of the first Railway-Bear Conflict Mitigation Symposium in 2010. Initiatives included building wooden pegboards to fence off the sides of tracks and chemically treating grains to deter the bears. After a complete review of the research projects, the development of some of them has been authorized, including grain alteration and the use of cameras to study the behavioural response of bears to trains.