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

Nuggets of Wisdom: Determining an Upper Limit on the Number Density of Chickens in the Universe