The great hornbill and the toucan both eat the same fruit, insects, and nuts. They both live in the rainforest. Their large bills function to get food and also as warning coloration. Which of the following is a limiting factor to the toucan population?

Because the great hornbill and toucan live in the same rainforest and eat the same foods, they compete for limited food resources. Competition can limit how many toucans the environment supports, so the limiting factor is competition. Bill coloration may help with feeding or warning, but it does not describe a resource constraint here.

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