Just watch them at your feeders. Most birds will use their bills to sweep through the food in a feeder to find the one seed they think is the best to eat. They don't seem to mind that all the other seed is being spilled onto the ground for you to clean up!
- Use suet or seed cylinder feeders. Quality suet isn't messy and seed cylinders on a Wild Birds Unlimited Dinner Bell feeder can make tidy feeders. (See photo above)
Source: WBU Nature News