This also reminds me of something that Bishop Williamson said, namely, that a big reason for the increase in atheism has to do with people having become disconnected from nature. People live and work in these artificial environments in modern times. But if you experience nature, you absolutely must conclude that there's Intelligent Design at work there. These animals just didn't randomly evolve these very complex, often organized, behaviors. Human beings, with all their "intelligence", can't explain some of the simplest behavior of various insects or even, at times, single-celled organisms, much less could random processes account for them.