Kestrel update: I found the location of their nest! The kestrels (Falco sparverius) are nesting in a second-hand woodpecker nest in a decapitated palm. I’ve seen lots of activity, but I’m not sure if they are preparing the nest cavity, laying, or actually tending chicks. I’m looking forward to seeing this year’s brood. 

Future sand: Deformed gypsum crystals on a dry playa bed, at White Sands National Monument, New Mexico. Gypsum leaches from the shallow water table at the White Sands playas following spring and summer rains. When the standing water evaporates a crunchy crust of gypsum crystals are left at the surface.