The one at the bottom (wren?) is thinking "this #$%& straw I brought ain't working !"
The hummingbirds need to call their union rep!
Must be that variant of Russian Wrens.A house sparrow killed our 5 BlueBird chicks, and possibly mom and dad Bluebird.
Wife is now trapping House Sparrows.
Yeah, them Baltimore folks can be kinda strange.....
Is that a 3D-printed feeder?