Input: Can you determine which animal is bird from the following list of animals.

Output:
Certainly! Based on the given context, the animals that are birds are:

1. Sparrow
2. Eagle
3. Turkey
4. Parrot

These animals are classified as birds because they belong to the Aves class, 
which includes species characterized by feathers, toothless beaked jaws, the 
laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and 
a strong yet lightweight skeleton.

The remaining animals on the list are not birds:

1. Cow
2. Tiger
3. Lion

These animals belong to the Mammalia class, which includes species that are 
characterized by live birth, hair or fur covering, three middle ear bones, and 
mammary glands for nursing young.

I hope this clarifies the difference between birds and non-bird animals. If you 
have any other questions, please feel free to ask!