  The lower limit on the chicken density function (CDF) of the observable
Universe was recently determined to be approximately 10$^{-21}$ chickens
pc$^{-3}$. For over a year, however, the scientific community has struggled to
determine the upper limit to the CDF. Here we aim to determine a reasonable
upper limit to the CDF using multiple observational constraints. We take a
holistic approach to considering the effects of a high CDF in various domains,
including the Solar System, interstellar medium, and effects on the cosmic
microwave background. We find the most restrictive upper limit from the domains
considered to be 10$^{23}$ pc$^{-3}$, which ruffles the feathers of
long-standing astrophysics theory.
