I spent a couple long days collecting data at the Niobrara Valley Preserve this week. There wasn’t a lot of time (or light, honestly) for photography other than the first hour of sunlight on Thursday morning. The Sandhills prairie is nearing the end of flowering season and sliding quickly into its fall costume. A few late-season flowers are in full bloom, but the most of the color in the prairie this time of year comes from leaves changing from green to various shades of brown and red. Here are a few photos from yesterday morning.