Pintail Ducks (IMAGE) Penn State Caption For reasons not clearly understood by wildlife scientists, pintails appear to be particularly sensitive to changes in the number of productive, small wetlands that have occurred across the Prairie Pothole Region. Credit F. Greenslade-Delta Waterfowl Usage Restrictions Non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.