Differentiate between human and bird on the basis of number of condyles.

Explanation

**Step-by-Step Solution:**

1. **Definition of Condyles**: Condyles are rounded ends of bones that articulate with other bones to form joints. In the context of the skull, they are the points where the skull connects to the vertebral column.

2. **Human Skull Characteristics**: The human skull is described as **dichondylic**, which means it has **two occipital condyles**. These condyles are located at the base of the skull and allow for a greater range of motion of the head.

3. **Bird Skull Characteristics**: In contrast, the bird skull is described as **monocondylic**, meaning it has **one occipital condyle**. This single condyle allows for a different type of movement, which is more suited to the bird's lifestyle and mode of locomotion.

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