I killed some baby bunnies in our backyard yesterday.
Our dog had moved the fluff away after my mom moved the barrel that the burrow was dug under during some yardwork. The day we found them, their eyes were still closed, yet one was hopping into the grass nearby. It wanted out, but we moved it back into the burrow, and created a rudimentary brick structure to cover it up, at my suggestion. To prevent it from getting hot, I added a plastic bin on top, while still hoping to leave enough room for the doe to get in and out. They were hardly moving. A couple days later, the parents checked on them and said they were "still" moving around a lot. A couple days after that, there were ants, flies, and worms all over them, with a single baby rabbit strewn out in the grass a few inches away from an exit to the bricks.
This is the second time we've tried to help rabbitkind on our property, but it's the first time I acted without researching what to do. I'll always look up what to do first when I help animals supposedly in-need, to never lead them to certain death again.