We have a family of bluejays living out back. It's a good thing they haven't decided to take up housing in the front yard. The bluejay is big and aggressive. It has been known to attack cats and small dogs. One can imagine what a bully the bluejay can be to other smaller, less aggressive birds such as Mr. Robin.
Different birds prefer different food.
The Black-capped Chickadee prefers sunflower seeds and suet while the Cardinal enjoys sunflower seed, cracked corn and nuts. The Chickadee will readily go to a feeder but the Cardinal likes to eat close to the ground. That's why our Cardinal family likes to eat at the Lighthouse Cafe. Although we'll stock some decorative bird houses we will concentrate on the safest and best for the birds. This is new for us.