House Finch, Northern Cardinal (male) & Mourning Dove... 04-20-20

Today I looked out my window and saw a House Finch at the feeder. I was able to get a couple shots, before a male Cardinal flew into a nearby tree. A few days ago I saw what I believe was either a House Finch or Purple Finch at the feeder, but I wasn't sure which one until today. A while later I saw a Mourning Dove eating from the platform feeder. When I first saw it I thought he was just relaxing, but I watched as it consumed a lot of feed. I was wondering what was eating up all the feed in the platform feeder.