Dispersal, the behaviour ensuring gene flow, tends to covary with a number of
morphological, ecological and behavioural traits. While species‐specific dispersal …

Birds evolved from and are phylogenetically recognized as members of the theropod
dinosaurs; their first known member is the Late Jurassic Archaeopteryx, now represented by …

Uncertainties in the phylogeny of birds (Avialae) and their closest relatives have impeded
deeper understanding of early theropod flight. To help address this, we produced an …

For 150 million years, the skies didn't belong to birds--they belonged to the pterosaurs.
These flying reptiles, which include the pterodactyls, shared the world with the nonavian …

To investigate how birds that differ in morphology change their wing and body movements
while flying at a range of speeds, we analyzed high-speed (60 Hz) video tapes of black …

Power output is a unifying theme for bird flight and considerable progress has been
accomplished recently in measuring muscular, metabolic and aerodynamic power in birds …

The limits of flight performance have been estimated in tethered Drosophila melanogaster
by modulating power requirements in a 'virtual reality'flight arena. At peak capacity, the flight …

The study of allometric and size scaling relationships is well developed in most biological
fields, but lags behind in the area of animal behavior. Part of the reason for this deficit is that …

▪ Abstract We use a comparative approach to examine some of the physiological traits that
make flight possible. Comparisons of related fliers and runners suggest that fliers generally …

In absolute terms, flight is a highly energetically expensive form of locomotion. However,
with respect to its cost per unit distance covered, powered flight is a very efficient mode of …