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? overlapping breeding seasons bill coloration genetic variability competition

bill coloration

Explanation:

The toucans have no competition nor  overlapping breeding seasons   with the great hornbill because the toucans live in South America, and the calalaos are a group of African and Asian birds.

The colors of the toucan seek to warn predators about their toxicity but sometimes it is a disadvantage by making them more visible in the green of the rainforest.

i am going to guess that it is co2.

the correct option is option d