After weeks of raising thier chicks and having them ready to fledge in the next few days their nest was destroyed by a predator.
It happened in the middle of the afternoon and the adults are still trying to land in a nest that isn't there.
A racoon would be the usual suspect but being midday this is unlikely.
A cat couldn't get to where the nest is, and squirrels are unlikely.
A predator bird, such as a bluejay wouldn't have knocked the whole nest down.
One swallow checked an unused nest in the carport to see if the chicks were there.
It's all a part of nature but it was rather sad.