I just started to use this in the training mode but my challenge is that the birds jump on the top part that closes. It isn't closing all the way (since it is in training mode) but I worry that this will close on their heads. Have you had any issues?I also have the Grandpa treadle feeder in the large size. I love it! Yes, it was expensive but I never have food on the ground around it. It's covered so no feathers or poop in the feed and it keeps out the small pests. The large size holds a lot of feed. I've filled it and left for 4-5 days and there is still feed in it when I get home.