Same experience as Lisa. I heard a couple of unfamiliar calls the past couple of days. Merlin alerted me as to what to be on the lookout for.
Sure enough, Tennessee warbler and an indigo bunting this morning. Spotted both of them. But I wasn't able to visually confirm the ruby crowned kinglet. Yesterday. It was a yellow rumped warbler.
Lots of goldfinches in my yard at the feeder in recent days. No hummers yet.
