Whistling-Ducks and Hybrid Ducklings

posted in: Morphology-Develop. | 1

“Two species of Whistling-ducks can be found at the Singapore Botanical Gardens. There are subtle differences between the two species but they are very similar in appearance. Their similarity is telling as many have problems identifying and differentiating one species … Continued

Black Swan’s aggression

posted in: Intraspecific | 6

“The Black Swan (Cygnus atratus) is a large waterfowl that was introduced to the lakes at Singapore Botanical Gardens many years ago. From Wikipedia, the adult swan measures between 1.1 and 1.42 metres in length, has a wing span of … Continued