Given this paragraph, what method of scientific study did Edmund Selous champion?
Edmund Selous started as a conventional naturalist, but developed a hatred of the killing of animals for scientific study and was a pioneer of bird-watching as a method of scientific study. He was a strong proponent of non-destructive bird-study as opposed to the collection of skins and eggs.
Edmund Selous was a pioneer of bird-watching as a method of scientific study.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Given this paragraph, what method of scientific study did Edmund Selous champion?
### Input: Edmund Selous started as a conventional naturalist, but developed a hatred of the killing of animals for scientific study and was a pioneer of bird-watching as a method of scientific study. He was a strong proponent of non-destructive bird-study as opposed to the collection of skins and eggs.
### Response: Edmund Selous was a pioneer of bird-watching as a method of scientific study.