Whenever I put a different kind of bird food into a bird feeder the bird food is never eaten. when I put the original bird food back the feeder is soon eaten and emptied. Birds do rely on the food we put out to survive.
so birds do rely on the bird food we put out. With winter coming I think it will confuse them if another type of bird food is in the feeder.

Could you try changing the bird food in summer when there is more food about for them?

Another idea - could you buy a new small feeder and put the nyjer seed in that. Have two feeders side by side. Or put a little food in a dish on the ground?

It seems a shame if you are having a steady stream of birds to change the food and upset them. Maybe I am biased because I never got any birds at my nyjer feeder. I still pour fat over bird food which includes njyer seed and put it on the bird table
I put different food on the bird table and that seems to go. I don’t know why different food on the bird table goes, but different food in bird feeders does not.
I know in England Coal Tits hoard food. They take the food, hide their food away, sometimes on the ground, sometimes in a leafy tree. They carry off nuts and store them in hiding places. Nuts are nutritious and store well. They also collect and store insects for a time when there is no food. The bird remembers the exact location.

I know not every bird stores food. so then again the answer will be different depending on what bird we are chatting about. That’s why birds are so interesting isn’t it.
By the way, good to hear from you. You must live in America. Can I ask which area? Hope this answer helps. Let me know how you get on. Best. Trisha.

Thanks for the post. I couldnt agree with you more….