.... To fill this gap, we explored how environmentally relevant urban noise affected the performance of wild-caught, city-living Australian magpies ( Gymnorhina tibicen tyrannica ) on a cognitive task battery including associative and reversal learning, inhibitory control, and spatial memory. Birds were housed...

...Sutirtha Lahiri; Nafisa A. Pathaw; Anand Krishnan ABSTRACT Although the study of bird acoustic communities has great potential in long-term monitoring and conservation, their assembly and dynamics remain poorly understood. Grassland habitats in South Asia comprise distinct biomes with unique...

..., and incorporating complementary colors may increase the contrast and efficacy of visual signals. Here, we describe plumage patterns in four ecologically and phylogenetically diverse bird families to test whether they possess complementary colors. We present evidence that plumage colors in each clade cluster along...

.... in muscle specialization/posture/kinematics). Furthermore, the elevated power at faster speeds in males may be linked to their muscle properties being suited to inter-male aggressive combat. The gait mechanics of each bird was determined from video recordings (100 frames s −1 ; HDR-XR520VE, SONY, Japan...

...John J. Lees; Lars P. Folkow; Jonathan R. Codd; Robert L. Nudds ABSTRACT Fat storage is essential to the survival of many bird species, providing energy reserves, but can have an effect on locomotor performance with an associated potential increase in predation risk. In particular, the ability...

... of origin and angles of bifurcation from the pulmonary artery. Presence of RBCs in the air capillaries of the lungs of rested chickens showed that failure of the BGB commonly occurs even in healthy and unstressed birds. Rapid repair and/or defense responses, which were observed, may explain how birds cope...