Migration Range as a Function of Body Mass for Flapping Birds and Soaring Birds (image) Research Organization of Information and Systems Share Print E-Mail Caption Fig. 2. Migration range as a function of body mass for (A) flapping birds and (B) soaring birds. Inset in (B) shows the comparison of the best-fit models between flapping and soaring birds. Credit NIPR Usage Restrictions Credit required Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.