Now, I keep pet quail, and indoors, so I’ll admit, I’m no chicken expert, but, I know the things that overlap, and birds in general, and, if you have to wonder, it probably is. That’s my bird rule. Play sand and other fine grained sands can, keyword, can, possibly cause crop impactions since they are able to “clump” when wetted, it’s definitely not a 100% avoid it at all costs it will kill your birds type thing, but it’s a risk if a bird decides to gorge itself on sand, and I don’t like taking risks myself, and especially not leaving it up to the bird’s discretion, because birds know the worst possible times to have something go wrong with them in your life, and will do something stupid at that very exact moment; and, the finer it is, the more dust there will be, which is a danger to you and them over time. What I would do, is either get a coarser sand, or, if you absolutely have to get this sand, mix a few bags of commercial poultry grit in, a few sized for adults, and a few sized for chicks, so they have a selection; though, I’d still mix grit in even if you go with a coarser sand, and always offer a dish of just grit, better safe than sorry. And be wary, not all grit sold for birds is just stones, it can have additives, mostly vegetable oil and probiotics, so if you’re doing anything organic or the like, you’ll want to be careful. Hope this helped.