I have 3 adult pekin ducks and have just recently upgraded them to a step 2 hard plastic pool.It is a lot bigger and deeper than their last pool so we built them a ramp. The ramp is not at all steep and is 2-3 inches wider than the ducks,but they refuse to use it and cannot get into or out of the pool. Today I put them into the pool and the stayed in there for 8 hrs before I had to shoo them out with a stick because they hadn't eaten since last evening. Here is a pic of the type of pool we have (not my pic, this is a pic found on Google, but same pool model). It has steps in the corners as you can see,and the ramp is setup right where those corner steps are. Any advice on how to train them to use the ramp or modify the ramp to make them more comfortable?