Diseased Bird: Sick House Finch

Lone male House Finch that we saw for about a week before I noticed his crop looking terrible, poor fella. Photos taken Oct. 29 (2023). We saw him at our tray feeder, tube feeder and one of our birdbaths. Do not know what his ailment is but to be safe, we took down all feeders and both birdbaths and super cleaned and scrubbed them and brought the feeders inside the house for 8 days and turned the birdbaths upside down. Never saw him again.