Which type of egg is found in the birds?

Explanation

### Step-by-Step Solution:

1. **Understanding Bird Eggs**: The question asks about the type of egg found in birds. Bird eggs are characterized by their structure and composition.

2. **Cytoplasm and Yolk Distribution**: In bird eggs, the cytoplasm is concentrated on one side, while the yolk is predominantly on the other side. This uneven distribution is crucial for the development of the embryo.

3. **Terminology**: The type of egg found in birds is referred to as **polylacetal** or **macrolacetal**. These terms describe the high amount of yolk compared to the generative part (nucleus).

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