OK, neat idea about the sticker, and glad you didn't catch a photo of a predatory bird getting ready to have a snack from your bird feeder birds! Neat idea, Addy, the brown paper bag to let them rest.
Once there was a hummingbird that got into big shed. They don't know to fly down to get back out, go up and into the ceiling. It finally wore it'self out and fell to the ground. I scooped it up, and took it into the house to get some sugar water to feed to it to get it's energy back. Put the sweetened water in a milk jug cap, tapped it's little beak down to find it, and that sucker drank and drank ... and then promptly took out in our house ... with cathedral ceiling! Shut off the fan, and watched it finally run out of gas and land on the floor. Gently picked it up, along with the sugar water, but this time I didn't let it sit freely on my hand until I was outside. Again, offered the water, which it drank, and then it flew away. What fun!!!