I saw a formation this large in the farmland of Central California near 5-Points driving south on Highway 145 last week. They turned the sky dark as they flew over my truck out of the orchards. It reminded me of the huge schools of fish you might see in the National Geographic TV specials, tens of thousands moving and bending in unison. Really a sight to remember.
OMG - that’s so awesome. Were you able to hear the sound of all those flapping wings?
I’ve only seen one in person once - en route to the Denver airport about a week and a half ago. It was too far away to hear but I stopped the car and watched them until they were out of sight.
Just amazing.