How big are rooster sperm?

Question

Chicken eggs are freaking huge compared to human eggs... does that mean that rooster sperm is extra large too?

Answer 1

No.  Simply stated, the sperm cell is not much more than a head containing genetic information, powered by a tail that moves the information to the egg so that fertilization can take place.  Large sperm would be less efficient to move around.  

Chicken gender is regulated by s*x chromosomes called X and Z, rather than X and Y like in most mammals.  Roosters with abnormal ZZZ chromosome complement DO have larger-than-normal sperm, but they are infertile.

In support of poultry, though, rooster s***n contains around 5 billion sperm per ml, about 40 times as much as that of a human.  Mature roosters produce about 35,000 sperm every second.