Came across a gulp of swallows that were flying around Lake Drake, outside of Springfield. They would all soar down, land close to the water, sit for a few seconds, and then take off. As I got closer to the water they got further away from me. Eventually, I was close enough to the area that they had landed to see that the only thing there was mud.
Of course now that I was close to the mud, they were nowhere close instead they were all flying in and out of the picnic pavilion which was approximately 50 steps away from the lake. Curiosity killed the cat, so the cat, being me, decided to go towards the picnic pavilion to see what was hidden there and why the swallows kept rushing in and out of there. As you can guess, I got close, and they got further away. Finally when I got inside the pavilion this is what I saw.
They had built themselves strong nests using the mud from the lake. There were no eggs. It was very interesting, wish I had been able to get close enough to capture one in a photo. Maybe next time. :)