We didn't break it. It's evolution. The barred owls simply out nest out, compete and out survive the northern spotted owls.

First, it was claimed that the northern spotted owls could only live in Old growth forests, but that was proven to be false. I've personally seen that it was false because they lived near me.

Then they said that the barred owls and the northern spotted owls did not interbreed, and I felt that that was false because I was pretty sure I came across hybrids. That was then proven to be the case too.

It is illogical to conserve one species by making another endangered. Nothing will change that makes the northern spotted owls better at breeding and surviving than The Barred owls that are similar in size, shape and even coloration.