Based on recently released information by the National Transportation Safety Board (NTSB), Cactus Flight 1549 Accident Reconstruction [exosphere3d.com] contains a very detailed technical description accompanied with various visualization animations of US Airways Flight 1549, or better, how it ditched in the Hudson River earlier this year. The data depicted, includes 3D navigation, radar imaging, NEXRAD weather and voice communication retrieved from different sources, which were all mapped to a single animated simulation.
The quality of these visualizations is meant to withstand the rigors of qualification for presentation either as demonstrative evidence or, if sufficient witness testimony is available, real evidence. Interestingly, "The raw data files for each radar facility are more than 1 million lines each and must be sorted and reduced into meaningful information before they can be plotted on a map."
Most people have not realized this, but the birds were visible on radar (at least on 2 separate radar facilities), before the event occured. After integrating the raw radar data and creating motion targets representing those radar returns associated with the flock of birds, the timeline clearly depicts the intersection of Flight 1549 with birds at a time of around 15:27:10. The NTSB Wildlife Factors Report has identified the feathers in the aircraft as Branta Canadensis (Canada Goose) by means of visual, microscopic and DNA analysis.