Thomas and I attended a birding festival over the weekend, which included a guided hike with experts. This was fantastic as we are relatively new to birding. We learned some identification tips and were just in awe of the knowledge/experience of the group leaders. As we were walking, our guide would stop and say something like, "I heard a Cerulean Warbler in those trees" so everyone would look and sure enough, a Cerulean Warbler would appear. How can people know so many bird calls?
We didn't take any good pictures of the birds, but here are a couple from the surroundings: