Very normal looking poo-pile. A BP can get an R.I. ANYTIME, and they need the humidity to shed...it's not the "cause" of an R.I. & in fact, if the humidity is too
low, your BP could end up sounding as if he has an R.I. after shedding if the outer linings of his nostrils fail to shed properly, leaving a partial blockage in his nose
that can cause noisy breathing. High humidity is no more the 'cause' of an R.I. in a snake than cold weather is the reason that we humans catch "cold"...so-named
before modern medicine sorted out the real culprits (nasty "germs"!). Conditions that are not optimal (humidity, temperature, poor sleep, stress, etc) can help creatures of any kind to catch illnesses because they lower the efficiency of their immune system.