I've been curious about small mammals being left along a trail I commute along and this morning I figured out that I must be startling a fox who let a frustrated yelp when I stopped to investigate his prize.
When faced with a relative 10 story tall threat they don't tuck tail and run, rather pretend to be invisible and if that doesn't work they just get fiesty.
Two flocks of about 20 individuals observed flying and calling high overhead
2 young of year trying to be invisible, less than 2 m away