"QGIS is a classic underdog story that is driven by volunteers dedicated to building what many consider the top open source GIS software."
"In drone survey missions, the choice between photogrammetry and LIDAR depends heavily on the exact application. You also need to consider operational factors, such as cost and complexity. Knowing what outputs you really need will help you make the right decision. "
"Counting birds by traditional methods can be difficult and expensive -- researchers can either count them on the ground manually or charter a plane and take aerial photographs. Both methods also depend on good weather. "