These small rodents lay scent trails of urine and feces that are reported to reflect UV light, making them visible to the UV receptors of kestrels, particularly in the spring before the scent marks are covered by vegetation.

• 这些小型齧齿动物会在行经之处，排出有气味的尿液与粪便，曾有报告指出，这些气味标记会反射紫外光，让茶隼的紫外光受器看到，尤其是在春天植物尚未覆盖住气味标记之前。