Most trees in the rainforest protect their leaves using toxins. The leafcutter ant has a unique adaptation to such toxins. It bites a piece from the leaf, chews it, then uses the mash to fertilize a fungus garden, which in turn supplies food for the ant colony. This image is from Wild Amazon.
Hummingbirds notice the color red easily amidst the endless green of the Amazon Rainforest. Flowers that rely on hummingbird pollination opportunistically use shades of red to attract the birds.
This image is from Wild Amazon.