Herring Gulls Return the Compliment

Nico Tinbergen and his colleagues did lots of studies on the Herring gull, especially in relation to the concept of the sign stimulus. A researcher from Exeter University has recently shown that Herring gulls now study humans with a view to locating food items (https://www.theguardian.com/science/2020/feb/26/gulls-observe-humans-to-home-in-on-tasty-scraps-study-finds). They reportedly are more likely to take items that humans have pretended to eat.