The willie wagtail is aggressively territorial. It's known to harass much larger birds (including eagles), venomous snakes, and humans that wander too close to its nest. Before an assault, it flares its white "eyebrows", making it look especially enraged.

While the spotted owlet is nocturnal, it can sometimes be seen during the day — it will bob its head and stare intensely at anyone who bothers it. This owlet can be located by watching for the small birds that often mob it or — during dusk and dawn — by the owlet's “chirurr-chirurr-chirurr” chuckle.

The speckled mousebird hangs belly to belly with others in its flock to keep warm while sleeping. After a meal — of toxic plants, clay, dirt, and peddles — a mousebird may hang upside down, exposing the black skin of its belly to the sun in order to warm up and aid digestion.

The large-billed tern uses its disproportionately long and thick beak to catch fish — either by plunge-diving into the water or skimming the surface with its beak as it flies. It has a commensal relationship with the tucuxi river dolphin, which often flushes fish towards the surface while hunting.

Endemic to Fiji, the golden fruit dove exhibits remarkable sexual dimorphism — the female is forest green while the male is a brilliant golden yellow. This dove lives in the canopy and is more often heard than seen, producing dog-like barking, low growling, and snoring noises.

The palm-nut vulture is unusual among vultures, in that about 70% of its diet is vegetarian — mostly consisting of palm nut fruits. It was once called the "vulturine fish eagle”, because of its eagle-like appearance and the way in which it hunts; swooping to the water's surface to grab fish.

The snowy sheathbill is an Antarctic scavenger. It eats anything it can find or pilfer; from faeces to regurgitated penguin chick food and even elephant seal milk straight from the teat. It often stands on one foot to reduce heat loss — a technique that also makes it quite clumsy.

The white-tailed tropicbird performs noisy, aerial displays — swaying its tail streamer from side to side while gliding through the sky. A male courts a mate by flying above her and touching his tail to hers, they then glide away together in synchronized zigzag flight to find a nesting spot.

Australian ravens are opportunistic feeders, eating anything from carrion to biscuits and bread — they have been seen dipping pieces of these into water to soften them. They will bash snails against rocks to get at their insides. Sometimes they even steal golf balls, mistaking them for eggs.

The sulphur-crested cockatoo communicates with extremely loud screeching calls. The cacophonous noise from a rowdy flock can be near-deafening. As these birds forage on the ground with their flock, there is usually a lookout who sits in the trees and gives an alarm cry if danger approaches.