Ken, your reinforcements are here, for your battle with ‘Da Squirrel’ … lol 🙂
Option 1… Search for “Squirrel Away” . Hot pepper that does not effect birds. Basically capsicum with a sticker. Some what pricey but the added sticker may be worth your time and $. Works !
Option 2 … Follow Red Barber’s advice: Put out enough food for the birds and the squirrels.
Option 3 … go here … lol …
Last Resort: As a last resort, cayenne pepper can be added to the birdseed at a rate of 1Tbsp. cayenne pepper to 1 gallon of birdseed. The birds will not be able to taste the cayenne pepper but the squirrels detest it.
Battle on … fearless Squirrel Fighter … LOL 🙂