Video analysis of the escape flight of Pileated Woodpecker Dryocopus pileatus: does the Ivory-billed Woodpecker Campephilus principalis persist in continental North America?
BMC Biology 2007, 5:8 doi:10.1186/1741-7007-5-8
- JM Collinson response to comments
- Imaging artifacts and flight mechanics in the Luneau video
- agreements and disagreements with Dr. Collinson's assertions