Nice idea but it's a shame the recordings are so short. I'd love some hours-long version that I could put on in the background and pair with a bit of ambient for fun.
I'd like to recommend a website I've been using for a very long time - mynoise.net - which seems to have exactly what you're looking for [0]. There are many different kinds of ambient noises you can play indefinitely, and there are even sliders you can use to compose your own "mix" of ambient sounds of a particular type (e.g. Wind Trees, Distand Stream, Close Stream, Owl, Birds, etc.).
There are many types of ambient sounds (I count 100 at the moment) available for free, and even more if you choose to donate to the site. You can donate any amount you want, and you get lifetime premium access to full site content.
The guy running the site, Stéphane Pigeon, is a signal processing PhD with a passion for sounds, and he travels the world recording ambient sounds for this website.
Oh wow, this is excellent, I love the ability to mix it, especially since the water sounds tend to overpower bird ones. This is exactly what I'd like, thank you so much!
A strong +1 for mynoise, especially the multi-noise mixing which is super-handy for drowning out coffee shops, offices, etc. whilst still having detail.
