片中没谈到的一点是哪种乌鸦更聪明。谷歌上有如下的评语：

Both of these birds are extremely intelligent (though ravens seem a bit smarter than crows) and are quite playful. Ravens have at least 7 different calls and can imitate the calls of other birds (geese, jays, crows). They also use stunt flying to attract mates (barrel-rolling, flying upside-down, and somersaults).