Not all sources give four hours as the guideline for priapism occurring: The duration time of a normal erection before it is classifiable as priapism is still controversial. Ongoing penile erections for more than 6 hours can be classified as priapism..
Guinness World Records (London, England) Considering that the average lifespan of a chicken is generally no more than seven to eight years, Keith and Donna contacted Guinness World Records on July 30, 2001, to make them aware that Matilda was eleven years old and still in excellent health.
The Lifespan of a Chicken. Believe it or not, chickens have quite an impressive lifespan! The maximum age of a chicken is around 25 years. It's very rare for a chicken to live that long, however, because they are so vulnerable to predators and disease. Due to their vulnerability, the average age of a backyard chicken is only about 3 or 4 years, although I feel that with special protection and care it would not be unreasonable to expect 7 or 8 years. My oldest hen is a New Hampshire red/blue bantam cochin mix named Sarah. She is 11 years old and still laying.