I worked as a research assistant for a project in Australia, Brisbane, studying the mating rituals of Bower Birds. Much of the study relied on the use of cameras, as each assistant had their own route and multiple study subjects, and the male birds were rarely seen during bower checks.
I was in my hide and happened to catch a male bower bird performing for a female for the first time. The bower bird courtship display is very elaborate, and I'm sure to a female bird it's very attractive, but for us it is just very funny to watch. It involves lots of whirring, almost mechanical noises, and stunted up and down movements, like the most jerky, uncomfortable dance that can be imagined. A moment that should have been a beautiful real-life Attenborough-like encounter just had me in fits of giggles trying not to make a noise so as not to interrupt the dance. It still makes me smile when I think of it now.