Took a quick look at 469 and that one didn’t seem like one of the harder levels to me. But maybe that’s just me and I got lucky with it. Some of the harder levels I were only able to beat after getting lucky with sardines, golden pigs and having the right cards available at the right time.
Not sure how much difference bird levels do. I have level 6 birds and for 6-room levels if i Birdie every room I just have enough to finish the level.