Suppose that the number of insectivorous birds has decreased in a mixed forest ecosystem. Name at least 3 changes

Suppose that the number of insectivorous birds has decreased in a mixed forest ecosystem. Name at least 3 changes in this ecosystem that will follow the decline in the number of insectivorous birds.

1) The number of insects will increase.
2) The number of plants will decrease, as they will be eaten and damaged by pests.
3) The number of predatory animals feeding on insectivorous birds will decrease.

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