Pollinators like bees, birds and butterflies are drawn to flowers for their color, scent and nectar. Pollinators move the pollen from the male part of a plant to the female part, allowing for fertilizing and seed production for plants to reproduce. Plants over time have adapted to become more appealing to pollinators to stay in existence. Flowers that attract birds tend to be colorful and unscented. I've seen a few birds bounce on and off, my larger sunflower heads, bending their stems but not damaging them at all. I love the sound of birds in the garden, and plant extra giant sunflowers, just for them. Bees are enticed by the nectar, color and scent of a flower, although they also do pollinate non flowering plants. Largely accountable for nearly all fruiting and vegetable pollination, bees have small legs that immerse in the nectar. The pollen gets stuck all over their fury bodies, which they transport around from plant to plant. A major key to their success at moving pollen around, making bees the darlings of pollination. Butterflies have ultraviolet light vision, giving them the ability to see patterns and colors humans cannot see. They do not stick around one area for too long, and are long distance travelers. These attributes, allow them to pollinate many flowers in large areas quickly, fleeting in and out spreading pollen and looking pretty while doing so. Moths are also known to be good pollinators, who's brains are wired to catch a flowers essence in the air and track the scent upwind, to the flower. Some moths,that move quickly, hover over a flower, then insert a straw like tongue, into the flower and drink up the nectar, moving pollen to the next flower it feeds from. Other moths that fly slower, do land on flowers, taking their time drinking the nectar and transferring pollen around, as they move from flower cluster to flower cluster. Bats and nocturnal pollinators, without the help of night vision goggles are guided by a flowers scent. They work on flowers that open at night. Creating the seeds of tomorrow is a very important part of nature.