How To Discourage Squirrels And Black Birds At The Bird Feeder
when all else fails…use Safflower seed

The other complaint is that the Common Grackle, a large black bird generally in small flocks. These birds have a tendency to over power bird feeders, driving off the more desirable birds people are working to attract. These Grackles can also consume large quantities of seed as well, often emptying a bird feeder in a short period of time.
If it is just squirrels you dealing with, you can always keep them off the bird feeder with a squirrel baffle as long as the dimensions are right and you pay attention to installation. A good quality pole or hanging squirrel baffle will prevent the squirrels from reaching the bird feeder. But if they are prevented from climbing the pole or sliding down a hook, they may just leap from a nearby fence, deck rails, or patio chair. Squirrels have an eight foot vertical leap, and a standing jump of four feet. They can shimmy up a half inch pole and slide down a piano wire. So if you opt to use a squirrel baffle, keep these facts in mind or they will just use another route. Squirrel baffles are extremely functional when properly used.Safflower Seed & Nutra Saff
provides three principle products: oil, meal, and bird seed. As a bird seed product, Safflower seed is high in protein. It can be used in any type of a bird feeder such as: tube feeders for house finch, Chickadees, and nuthatches, elevated feeders for Blue Jays, Cardinals, and other Grosbeaks, and on ground feeders for doves. For many people who feed birds they have added Safflower seed to their backyard bird feeding program along with other feed products. It attracts a large variety of birds.
is a golden brown, thinner, and the process increased the oil content by as much as 30%. This equates to a Safflower seed which is higher in protein making it more desirable to the birds. In fact research has shown birds prefer Nutra-Saff over traditional Safflower seed two to one. Yet the Nutra-Saff retains the qualities that squirrels and Grackles dislike.In my yard I use all the techniques I have suggested. When possible I use squirrel baffles to keep the squirrels foraging on the ground and off the bird feeders. Where location is a problem, I use squirrel proof bird feeders to do the trick and provide sunflower hearts and black oil sunflower seed in those feeders to the birds. The squirrel proof feeders make it a challenge for the Grackles to get any feed from, yet are accessible to the Cardinals and others. The caged feeders are always filled with sunflower hearts as the finch, Chickadees and woodpeckers have me filling them daily. And the ground and platform feeders have a supply of Safflower seed, NutraSaff to be exact, for the Cardinals, doves, and all my other favorite birds. As for the Grackles? They simply cannot find much to eat so pose little problem. And the squirrels? We put some peanuts out for them. Otherwise, they do a fine job cleaning up any seed that the birds eject to the ground.
Note:
If you are using Safflower seed in your bird feeder for the fist time, be patient. The birds may feed on it immediately or it may take up to a week for them to identify this product. But once they do you’ll enjoy attracting the birds you want yet eliminate the Grackles and squirrels.
If you are replacing a product in your bird feeders with Safflower seed, you may experience squirrels and Grackles digging through it, looking for the bird seed they had previously enjoyed. It won’t take long before they abandon their attempts and leave the Safflower seed alone.
First year Grackles may tend to feed on the Safflower seed prior to their migrating south for the winter. However, when they return the following year as adults, they will have little to do with it.

No help at all…I need to be able to feed the squirrels without being invaded by blackbirds!
Thank you
Nutra Safflower or traditional white safflower will prevent squirrels from robbing your bird feeders
Dave