Identify the odd term: Three of the following are birds, while one is a mammal that flies. Choose the non-bird.

Introduction / Context:
Biological classification questions frequently contrast classes such as birds and mammals.

Given Data / Assumptions:

• Cuckoo, Crow, Parrot → birds (Aves).
• Bat → mammal (Mammalia) with powered flight.

Concept / Approach:
Group by taxonomic class rather than ability to fly.

Step-by-Step Solution:

Verification / Alternative check:
Although both birds and bats fly, their anatomy (feathers vs skin membranes), reproduction, and classification differ.

Why Other Options Are Wrong:
They share the same class (Aves).

Common Pitfalls:
Equating “flies” with “bird.” Flight is not exclusive to birds.

Final Answer:
Bat is the odd term (a mammal).