... , G. K. ( 2013b ). High flight costs, but low dive costs, in auks support the biomechanical hypothesis for flightlessness in penguins . Proc. Natl. Acad. Sci. USA   110 , 9380 - 9384 . 10.1073/pnas.1304838110 Gaston , A. and Jones , I. ( 1998 ). The Auks: Alcidae . USA...

...Stephen J. Insley; Rosana Paredes; Ian L. Jones SUMMARY We investigated differences in parent—offspring vocal recognition between males and females in a natural population of razorbills Alca torda , a long-lived and highly social species of auk (Family: Alcidae ). Razorbills provide biparental care...

... © The Company of Biologists Limited 2002 2002 puffin Fratercula arctica Alcidae alcid swimming diving locomotion kinematics. Underwater wing propulsion among birds is quite common and has evolved on several separate occasions. Among the wing-propelled birds, the penguins...