Funnel traps are specialized devices used in ecological studies to capture small animals, such as insects and amphibians. They consist of a funnel-shaped entrance that directs creatures into a collection container, making it easier for researchers to monitor populations and study biodiversity in a specific area. These traps are often placed in various habitats, including forests and wetlands, to gather data on species distribution and behavior. By analyzing the captured organisms, scientists can gain insights into ecosystem health and the effects of environmental changes on wildlife populations.