Sulci are small grooves, but there are also large grooves, and these are called fissures. Fissures divide the cerebral cortex into lobes and also divide the cerebrum into the right and left cerebral hemispheres along the saggital plane.
The ducks predator is the pelican,and,wolf, foxes, raccoons, snakes, sharks, weasels, hawks, owls, eagles, cats, dogs, rats, large fish (especially for ducklings), turtles, co â¦ yotes, Tasmanian devils, seals, killer whales, mountain lions, badgers, falcons, shoebills, storks, herons, and wolverines. duck is both predator and prey. A duck eats living organisms such as small fishes (not to mention insects and grasses), which makes it a predator.
Mandarin ducks demand very specific breeding sites preferring to nest near water and, ideally, with the nest box accessed from the water, ie: facing a pond or lake, and raised on a platform a metre or more above ground level, reached by a ramp. secure enclosure is essential to keep the Mandarin ducks in and keep out potential predators such as foxes, hawks, crows, and domestic cats and dogs. Pairs usually are allowed a 2m x 2m pen, preferably with a small pond.