Hummingbird Research Paper

While some plants are pollinated by the wind or are otherwise self-pollinating, the vast majority rely on hummingbirds, bees, butterflies and bats to carry pollen from one individual plant to another. Like animals, plants have male and female parts, and in order for plants to make seeds so that they can reproduce, the pollen grains must be transferred from one plant to the ovary of another plant of the same species. The pollen and ovary are packaged inside flowers with bright colors or alluring scents to help attract pollinators into visiting the flowers. Most pollinators come to flowers to feed in the sugary, calorie-rich nectar, and pollination assistance is merely a coincidence.
Hummingbirds have long beaks and even longer tongues, which
allows them to feed at flowers that are too long and thin for anything else. When a hummingbird inserts its beak into a flower to drink the nectar, sticky pollen grains cling to the side of its beak. When the hummingbird visits its next flower, some of the pollen grains are transferred, and if both flowers are the same species, pollination occurs.
Hummingbirds are strongly attracted to red flowers, although they also frequent pink, orange or other colored flowers. They also prefer flowers shaped like a tube or trumpet.