The omnivorous flock will eat the most as it eats both insects and seeds. With the removal of fruit it will not be affected much.
The herbivorous flock will eat the least as it has the option to eat seeds only after the removal of fruit.
Explanation:
Let us take the example of Finches. Finches have many different species with different variations adaptable to conditions favorable as per availability of the type of food.
Lets say -
Species X and Y is provided with insects, seeds and fruit.
Species X - Omnivorous
Species Y - Herbivorous
The species X will be able to eat the most as it is an Omnivore.
The omnivorous flock will eat the most as it eats both insects and seeds. With the removal of fruit it will not be affected much.
Species Y will be able to eat the least as it is an herbivore.
The herbivorous flock will eat the least as it has the option to eat seeds only after the removal of fruit.
