I agree with Gin – from the Sialis website:
Experimentation: When conducting experiments, we must make our best efforts, based on available information and good judgement, to first do no harm.
For example, somebody tried putting Plexiglas roofs on a nestbox, in an attempt to deter House Sparrows. The heat cooked the eggs. There is no need to repeat an experiment like that. This is why I encourage people to report not just on successful experiments, but also on failed ones, despite how embarrassing that may be.