To calculate the acceleration of the bird, we need to know how strong the wind force is.

Here's the formula we'll use:

Acceleration (a) = Force (F) / Mass (m)

* Force (F): This is the wind force you need to provide in Newtons (N).

* Mass (m): This is the bird's mass, which is 2 kg.

Example:

Let's say the wind force is 5 Newtons. Then, the bird's acceleration would be:

* Acceleration (a) = 5 N / 2 kg = 2.5 m/s²

Therefore, to find the acceleration, you need to tell me the wind force in Newtons.