On the Hoge Veluwe National Park in September is the rutting season of the Red Deer. I visited the area and was lucky to see two males one of which obliged with making the sounds and right movements. The ranger threw apples around which attracted them.
First the females appeared
The male soon followed
The antler is magnificent !
Go to https://www.youtube.com/watch?v=DmKo5-VbmSM to hear the sound
I wasn't the only one there
In the nature area de Grote Peel in the south of The Netherlands I found a pond with a large number of frogs. After sitting down for a while they lost interest in me and just wnet their way which allowed me to take several nice images.