OLLERTON, J.; NUTTMAN, C. Aggressive displacement of Xylocopa nigrita carpenter bees from flowers of Lagenaria sphaerica (Cucurbitaceae) by territorial male Eastern Olive Sunbirds (Cyanomitra olivacea) in Tanzania. Journal of Pollination Ecology, [S. l.], v. 11, p. 21–26, 2013. DOI: 10.26786/1920-7603(2013)7. Disponível em: https://pollinationecology.org/index.php/jpe/article/view/205. Acesso em: 6 feb. 2023.