Why is a platypus diurnal?

Answer 1

Most species of Australian mammals are nocturnal, and this is usually an adaptation over time to help them avoid their main predtaors, which are Birds of Prey and snakes.

Platypuses are mainly nocturnal feeders, and can usually only be observed at dawn and the in the very early morning, and dusk/late evening. This behaviour is known as "crepuscular".

Answer 2

Platypuses are nocturnal. They are mostly active at night.

Answer 3

It isn't. The platypus is nocturnal.