At the end of last year, for several weeks, I used an app on my phone to record bird songs. I was quite curious about how many different birds would come to our garden or fly over? Every day, early in the morning, I put my phone on the windowsill for about 15 minutes and I must say, I was rather surprised about the result: 34 different species until now. We are not so very far from a few nature preserves and the birds are not all coming into the garden but still! This was a good starting point for a new concertina book and ... I learned a lot about birds, their names and how they look!