They don't call it "the birds and the bees" for nothing. If you want to up your game, take a lesson from the birds. Actually, take a few of them! Here's a nifty compilation.
However, we do not recommend following this guy's advice. He seems to be pretty inexperienced.
Birds are good at more than just sex! Here's some footage of the lyrebird mimicking complex sounds it has overheard in the forest -- camera shutter noises and chainsaws included.
If you're looking for birds doing a bunch of weird shit, look no further. Here's a playlist!