Why are the monarch butterflies wings wet when it comes out?
All butterfly and moth wings are damp when they hatch from their crysalis. If the interior of the crysalis was dry, they'd die. They need the moisture to keep supple; on hatching they gradually spread their wings until they become dry enough to fly.
Butterflies consume flower nectar, and occasionally supplemental water (and sodium from salt, even from human sweat). But their wings are so light and delicate that they will not function if wet (as when they first emerge from the pupal stage). Fortunately, most wing tissue sheds liquids such as rain.
No they do not come out at night because they would rather come out in the morning when the sun is up and shining. They come out when the sun is shining because their wings warm up and they can fly easily. Another reason they don't come out at dark and night is because the wind will get heavier and it will carry them away and their wings are very thin and fragile, so if…