Most of the time I scan for unusual forms in the sky. Enjoying the ending of the day before heading into the house for the night!
Clouds form some extraordinary patterns. Nice job capturing these!
Wow, that is odd. Looks a little like a UFO!
Lenticular clouds... not UFOs! LOL
Lentucular clouds: Probably formed in late afternoon and maybe on the lee side of a peak or mountain range. your photos are excellent examples.