Edible bird’s nest is made by a species of cave-dwelling swiftlets. Weaved from their saliva and harvested in caves and man-made nesting houses, bird’s nests are then painstakingly cleaned ...
One ancient bird group that didn’t survive was the ... Photograph by Sharon Beals-Australian National Wildlife Collection, CSIRO This mud nest, built by a white-winged chough, showcases the ...
Some of these works, such as the bowerbird’s nest, are defined in the eyes of their animal beholders. Others have a largely functional purpose, such as mating or feeding, yet manifest in patterns ...