Previous literature has found that various environmental contaminants, such as endocrine disruptors, have harmful effects on organisms such as Japanese quail. Numerous studies have been conducted to analyze characteristics such as reproductive behavior in mammals, however the current study adds knowledge to a little-studied population, avian species particularly the Japanese quail. It appears that exposure to these estrogen receptor antagonists has a negative impact on the reproductive behavior of these species, so much so that the main aim of the researchers of the present study was to formulate a standardized endocrinological test. This standardized test would help identify insidious estrogen receptor effects in male Japanese quail before the avian species' population is significantly reduced. To evaluate the effects of environmental contaminants, researchers should observe the sexual behavior of quail. Not only sexual behavior is responsible for the reproduction and keeping the species alive. It is also noted from previous literature that Japanese quail sexual behavior is said to be characterized by the involvement of large amounts of physical force. Quail who fail to adhere to typical male sexual behavior would be easy to identify as those who are considered deviant. The hypothesis of the present study was that exposure to synthetic hormones such as ethinyl estradiol and diethylstilbestrol would alter the copulatory behavior of male Japanese quail. The present study conducted its experiment by incubating fertilized Japanese quail eggs at a stable temperature of 37.5°C. Synthetic estrogens such as ethinyl estradiol and diethylstilbestrol were injected into the fertilized eggs. ...... half of the paper ...... contaminants are harmful to Japanese quail. Environmental containment serves as a catalyst to impair sexual reproduction, thus significantly altering the population density of this particular avian species. This study extends knowledge on the knowledge provided in class. Environmental container intake begins at the water level and extends to avian species where there is greater magnification of endocrine disruption as these birds eat at smaller scale levels. Just as these birds are part of a food chain, we humans are part of a linear sequence. This particular avian species finds meat consumption an alternative form to chicken. Just as environmental containment levels are at high magnification in Japanese quail, intake can produce harmful effects that can be translated into the human organism.