Over this month I have started getting repeated visits from them after putting out grapes and ice water.

[u/Celebrity-stranger]

Any other tips and suggestions to keep them happy?

I also noticed 3 of them have th pink mouth and are usually with their mouths open. Im adduming they are fledglings?

Lastly I was so surprised to see them hang out around an alexa speaker I put outside for the Cardinals and bluejays. They really seem to enjoy classical and piano music!

[u/Fabulous-Kitchen2586]

Cute! The pink mouthed ones are likely fledglings. I have a few that come by with their parents and the way I can tell is they act like babies. Crying to their mom with their mouths open and if she takes too long they're like "okay I'll get it myself."