The force of gravity acts on all objects with mass, regardless of their size. However, the effects of gravity can be different for objects of different masses and shapes.

In general, gravity will affect a hummingbird differently than an eagle in the following ways:

- _Weight_: The hummingbird is much smaller than the eagle and therefore has less mass. This means that the force of gravity pulling down on the hummingbird is less than the force pulling down on the eagle. As a result, the hummingbird weighs less than the eagle.

- _Falling speed_: The hummingbird has a higher surface area to mass ratio than the eagle. This means that the air exerts more drag on the hummingbird than on the eagle. As a result, the hummingbird falls more slowly than the eagle.

- _Flight_: The hummingbird's wings are much smaller and lighter than the eagle's wings. This means that the hummingbird must flap its wings more quickly than the eagle in order to stay in the air.

In conclusion, while the force of gravity acts on both hummingbirds and eagles in the same way, the effects of gravity are different for these two animals due to their differences in mass and shape.