I went out for a short walk at sunset yesterday. I had noticed large flocks of small birds flying into the trees across the road. It turned out to be a large roost of house sparrows all trying to jam themselves into two small trees making a racket. I'd estimate that there were about 500 birds. Last spring I saw huge flocks of house sparrows coming to roost in the reeds around one of the ponds. I spent ten minutes scanning the flock to see if something else like a Spanish Sparrow was mixed in. I only found house sparrows.
This afternoon a large brown falcon flew over our building, I didn't have my binoculars so I couldn't ID it. It might have been a Saker Falcon.
While I was walking around our building I noticed little mud tubes on the outside of a dead Eucalyptus tree. They were the covered runways of tiny white termites. The tunnels protect their bodies from the sun and from the view of predators.