The Sulphur-crested Cockatoo (Cacatua galerita) is a striking parrot native to Australia and nearby islands. This medium to large-sized bird typically measures about 18 to 22 inches in length. Its most distinguishing feature is its brilliant yellow crest, which can be raised and fanned out when the bird is excited or threatened.

The plumage is predominantly white, with some variations that may include shades of gray or pale yellow, particularly on the underparts. Sulphur-crested Cockatoos have a strong, curved beak ideal for cracking nuts and seeds, which form a significant part of their diet, alongside fruits and roots.

These birds are highly intelligent and social, often found in large flocks in the wild. They are known for their playful and affectionate behavior, making them popular pets. However, they require plenty of social interaction, mental stimulation, and space to thrive. Due to habitat destruction and the pet trade, Sulphur-crested Cockatoos face threats in the wild, highlighting the importance of conservation efforts. Their vocalizations are loud and can include both calls and mimicked sounds, showcasing their communicative nature.