And we can only speculate on the diversity of flight ability among extinct avian dinosaurs such as the enantiornithines and the enigmatic, four - winged microraptors, with flight feathers not only on their forelimbs but also on their legs. (scientificamerican.com)
To test the hypothesis that the pesticide impairs flight ability, the researchers designed and constructed a flight mill (a bee flight - testing instrument) from scratch. (sciencedaily.com)
Testing a causal connection between flight ability and egg shape is tough «because of course we can't replay the whole tape of life again,» says Claire Spottiswoode, a zoologist at the University of Cambridge who wrote a commentary accompanying the study. (sciencenews.org)