Comments and insights on the name Armistead: | Edit. Armistead is considered a VERY preppy name. It is more commonly used as a middle name. It is rarely used as a first name. I know a Armistead, it was his mothers maiden name. Personal experiences with the name Armistead: | Edit Share what you know! Nicknames for Armistead: | Edit Share what you know! Meanings and history of the name Armistead: | Edit
However, all this depends on the breed and each individual bull. Some breeds that are later maturing (typically Continentals), like Charolais, Simmental, Limousin or Salers, won't start showing puberty until they're around 12 to 16 months of age.
Cockatiels should not be allowed to breed until they are at least 18 months old. Even though they are physically capable of breeding as young as 5-6 months of age, young males can be infertile and young females can suffer from health complications like egg binding.