They can sink and drown if the water is too deep or if. they get overly tired. Do not allow them to get chilled or get excessively wet before they are feathered out. They can. get chilled even in wet grass. I recommend using shallow pans to let them splash around in.
Walter White's discards, commented one Facebook user, comparing the turquoise ice to the blue meth Walter White cooks up in Breaking Bad. Unlike Walter White's creations, the blue ice on Lake Michigan has much less illicit origins. The bizarre coloring has to do with the ice's density. Ice only appears blue when it is sufficiently consolidated that bubbles do not interfere with the passage of light, explains this Carleton University guide to glaciers.
Why Water and Ice Are Blue. In both its liquid and solid form, water (H2O) molecules absorb red and yellow light, so the reflected light is blue. The oxygen-hydrogen bond (O-H bond) stretch in response to incoming energy from light, absorbing energy in the red part of the spectrum.