Effect of Caloric Value of Nuts on Food Preferences of Corvus brachyrhynchos


  • Sharon L.


The nut preferences of Corvus brachyrhynchos, or commonly known as the American
crow, were observed to determine if caloric value was the main driving force for preferred
consumption for common urban birds. Birds tend to prefer protein and energy-rich nuts
compared to cheese and crackers, according to a 2017 study (Støstad et al, 2017). Our null
hypothesis is that if the birds are more driven towards high-calorie foods, then more of the
pecans would be consumed. To determine if this preference extends to the entire nut family, a
2-week long experiment was performed to collect data on how many almonds, peanuts, pecans
and walnuts the birds would eat daily. The data was then statistically analyzed with the
Kruskal-Wallis test, which produced a p-value of 0.9953. Since the p-value > 0.05, we fail to
reject the null hypothesis and conclude that there was no significant difference in nut preference
due to caloric differences in Corvus brachyrhynchos.