No. 2.

1. I am a bird composed of 9 letters.

My 4, 6, 3, 9 is part of a wheel.

My 8, 2, 1 is an opening.

My 7, 2, 5, 9 is to venture.

Aristotle.

2. I am an animal composed of 9 letters.

My 8, 2, 4 is a fish.

My 1, 6, 3 is a pronoun.

My 8, 7, 5, 9, 3, 2 is a bird.

Snowdrop.