I have been accustomed to seeing bushtits massed on suet feeders over the years; when I hung fat from mesh bags the birds would resemble 'living' grapes as they clung and fed.
A year of so ago I noticed they would also come to the peanut feeder.
You can see them on suet and peanuts in the photo. Click on photo to enlarge.
Now what is new to me is lately seeing them perched on the hummingbird feeder. For awhile I wondered if they were perhaps eating bugs. But it seems they are going for the sugar water. I am curious.