In season 1, episode 5, Jodi, Tess, and Becky pulled a calf. Tess declares the calf is a boy when it is not yet standing and both girls are still sitting in the position they were when the calf came out. There is no way one can tell the calf is male or female without lifting it's hind leg when it is lying on its side. In addition to that, it only took 30 seconds for the calf to stand when in reality it takes more like ten minutes. Overall the whole scene was quite inaccurate.
About 3/4 through the first season, everyone celebrates Jodi's 18th birthday. Jodi's dad left when she was one year old. Claire comments that her dad has been gone 19 years, then later Tess says 18 years. That would have made Jodi 19 or 20, and this is only the fifth show of the season.