Swallows or swifts?

Walking with Betty talking and looking, a surprisingly warm and sunny morning.
Catching the rhododendrons before they wilt.
Are those swallows or swifts Nige said? I don't know.
Thinking about Werner Herzog and nature. He says
Nature here is vile and base. I wouldn't see anything erotical here. I would see fornication and asphyxiation and choking and fighting for survival and... growing and... just rotting away. Of course, there's a lot of misery. But it is the same misery that is all around us. The trees here are in misery, and the birds are in misery. I don't think they - they sing. They just screech in pain.
What do you think?