A change in bird density within a captive flock of Sicalis flaveola pelzeni (Sclater, 1872) affected the decision to join a group. Ruling out inter-individual differences and maintaining constant the size of a food patch, birds were found to fly more often to the food source and spend a longer time in its environs when kept in greater groups.
CITATION STYLE
Lombardi, C. M., & Charbuki, M. (2002). Effect of bird density on the decision to join a group in the Sicalis flaveola pelzeni (Passeriformes, Emberizidae). Iheringia - Serie Zoologia, 92(1), 105–109. https://doi.org/10.1590/S0073-47212002000100011
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