When people see a bird that impresses them they often tell me about it. Sometimes they say, "I saw a crane" and I wonder... was it a crane or something else? So I've made this conundrum into a quiz.
Which of these are cranes? All of them? Some of them? Only one of them? And which one is non-native?
(The answers are in the comments.)
(photos #1, #2 and #3 by Steve Gosser, photo #4 from Wikimedia Commons)
p.s. As usual I'll wait to release comments from moderation so that early responders don't give away the answer.