We spent the day at my mom’s yesterday and much of that time outside near a tree with a Northern Flicker nest. Every twenty minutes or so the mama bird would arrive for a feeding to a chorus of squawks. Each time just one bird was fed. They must have been taking turns although you couldn’t tell them apart. One time we did see a second bird pop up, likely trying to jump the cue, and was prompted pecked back down by the first.
Here’s my video of one such feeding. Unfortunately the human squawking disturbed the audio so I added a little Sound of Music. Enjoy!