To better understand songbird habitat, Dr. Saab wanted to look at the big picture. In this FACTivity, we are going to make observations at different scales, just like Dr. Saab. Materials: Two lengths of string or twine – one 36 inches long and one 50 feet long; each length will be tied into a circle. Writing utensil Somewhere to record observations ( a sample observation chart is included ) This is the Spanish version of the FACTivity. Topics: Citizen Science, Observation, Outdoor Activity, Sampling, Scale.