The document provides information about mammals, reptiles, and birds exhibited at Australia Zoo. It describes key characteristics of mammals such as being warm-blooded and giving birth to live young. It notes that while most mammals live on land, some have adapted for aquatic environments, and bats are the only mammals that can truly fly. The section about birds outlines that they are warm-blooded and covered in feathers, using modified forelimbs as wings for flight, and having acute vision and hearing.

1. Australia Zoo
Mammals Reptiles
Birds
Source: Australia Zoo - http://www.australiazoo.com.au/our-animals/amazing-animals/

2. Australia Zoo
Mammals
Mammals are the highest class of vertebrates and the
female has mammary glands which secrete milk for the
nourishment of young after birth. Mammals are warm-
blooded and the majority of their body is covered with
hair. Mammals give birth to live young (except the
platypus and echidna, who lay eggs). They also have
three middle ear bones.
Most mammals live solely on land, but there are
several groups that have specifically evolved to exist
solely in aquatic environments (dolphins and whales)
one of which is the largest of all animals. Only one
group has mastered the art of true flight (bats)
although several have developed the ability to glide
through tree tops.
Source: Australia Zoo - http://www.australiazoo.com.au/our-animals/amazing-animals/

3. Australia Zoo
Birds
Birds are warm-blooded, egg-laying, vertebrate
animals. They are covered in feathers and their
forelimbs are modified into wings which are used for
flight. Their feathers are highly protective against cold
and also against water. Birds have adapted for flight
with their bones being made up of a honeycomb
structure so as to reduce their structural weight. They
also have acute eyesight and hearing but little sense of
smell. Most birds are diurnal (only active during the
day) although some have become specifically adapted
to a nocturnal lifestyle (only active during the night).
Source: Australia Zoo - http://www.australiazoo.com.au/our-animals/amazing-animals/