Apparently tree swallows have been swarming in Florida at various places - Sarasota in mid-December and now Ruskin since about the first of February. My sister and her husband are going to try to watch them tonight
Here are some videos that people have posted on YouTube:
(This guy has several videos of the swallows, so check his channel)
We put up a birdhouse for bluebirds and got tree sparrows instead about 8 years ago. Best thing that ever happened. We love those guys. A huge colony of them come to our area and they nest in nearby homes.
What is so darned hard to believe is their courage and how dedicated these birds are to protecting their eggs. I could be pulling weeds from around their post, or planting annuals within a few feet of the nestbox, and the swallow just stares at us from the little hole, never leaving....even if I call a neighbor to see her, she stays (or he) and just looks at us looking at her.
They come back every year, and fight off the sparrows trying to steal the box. Then when the kids are raised, the sparrows all leave our area at the same time, and they're gone till next year.
Haven't watched your films yet, just wanted to put in my 2 cents worth.