I probably should have checked before I ordered the ducks but, would ducks be able to get into their coop? https://www.backyardchickens.com/a/silver-lake-coop If you look you can see the ramp and the front door. The ramp takes them to their run but the front door takes them out to free range. The chickens navigate both very well but I've read something recently about ducks not being too fond of ramps. What do you think?