Slaughtering a Chicken
Scholars have said that seeing a chicken or rooster slaughtered from the back of the neck may indicate a reprehensible act. Generally, any inverted action, inverted clothing, inverted sleeping, or inverted riding of an animal signifies an undesirable matter coming from an unexpected direction, which could be a turn from good to bad or vice versa, except for wearing fur inverted, which may indicate excessive display of wealth.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam