Babies are typically among the most vulnerable creatures in nature, but the fulmar has evolved a top notch defense system. Chicks also spit at their parents, who are immune to the effects of the oil.

The Mandarin duck is a sexually dimorphic species, meaning males and females differ in appearance. The male has a rich, colorful appearance, which includes brown cheeks and a long brown and white crown sweeping back from the top of the head. The chest is dark purple, with black and white strips, and the wings are brown with an iridescent blue-green edge. This striking coloration helps the male attract the less-colorful females, which display brownish-black plumage with white markings around the eyes and along the throat. ...

Hummingbirds, like this little golden rufous hummingbird, have up to 1,500 feathers, which is the fewest number of feathers of any bird species in the world.

This is a mating ritual being performed by a colony of James's Flamingoes (Phoenicoparrus jamesi), native to Peru, Chile, Bolivia and Argentina. The males will all vocalise together, sticking their necks and heads straight up in the air, and turning them back and forth in unison to attract the females. ...

African spur-winged geese (Plectropterus gambensis) become so toxic after eating blister beetles that consuming their flesh can kill a human. Blister beetles (family Meloidae) are toxic due to the presence of a chemical compound called cantharidin. Cantharidin is a potent toxin that these beetles produce and store in their bodies as a defense mechanism against predators. It acts as a powerful irritant and blistering agent when it comes into contact with skin or mucous membranes. The toxicity of blister beetles serves as a deterrent to potential predators, helping them avoid being eaten. ...

Watch the fastest animal in the world - a peregrine falcon - effortlessly accelerate to speeds of more than 290 km/h to chase a plummeting skydiver.