Recently, he studied DNA from the museum's collection of old bird bones, some more than 1,000 years old. (sciencenewsforstudents.org)
«You can find them for instance in nerve cell networks, in bird bones, in strangler figs, and also in some large - scale images of the universe.» (creators.vice.com)
Given the fragility of bird bones and their poor preservation in the fossil and archeological record, it may be some time before we can narrow down the date any further. (storagetwo.com)