So what the heck is the deal with #substack ? Is it like #patreon but for writers? Is it worth getting into?

Morning! I’m new here, I’m a poet and musician. I am interested in and writing about these guys right now- white ibises. Before I conduct my own research, does anyone here have any personal anecdotes, symbolism, or folklore about these graceful guys? Thank you in advance💙
#whiteibis #birding #poetry