Today, to the museum; where there is an exhibition about apes and monkeys (and about prosimians).
The exhibition centers on the social lives of the various primate species, including communication. It is especially aimed at children, and has many films, and games and other interactive features.
In Pictures: Ring-tailed lemurs sniff out best mates: here.
There were also other temporary exhibitions in the museum. The one on the red pacu caught in Leiden was still there, though moved to the other end of the bridge.
In the photo exhibition Earthsong, one photo was about the Veidivötn lakes in Iceland; where, long ago, I had seen common loons swimming.