Breast feathers of Neotropic Cormorants (Phalacrocorax brasilianus) from two nesting colonies in Lake Livingston (LALIV) and Richland Creek, Texas, were collected during 2014 and were analyzed for metals and metalloids. Mean concentrations of Al, As, Cr, Cu, Fe, Pb, Sb, and Se were not significantly different in breast feathers of cormorants from the two locations or between sexes. However, mean concentrations of Co, Mn, Ni, and V were significantly greater in feathers of cormorants from Richland Creek than in those from LALIV; and Zn concentrations were greater in cormorants from LALIV than in those from Richland Creek (p < 0.05). Overall, except for a few outliers for Pb, concentrations of heavy metals and metalloids in feathers were similar or lower than those reported in other species of cormorants from all over the world and were below levels of concern for lethal or sublethal effects on the species.

2014 年收集了利文斯顿湖 (LALIV) 和德克萨斯州里奇兰溪的两个筑巢群的新热带鸬鹚 ( Phalacrocorax brasilianus ) 的胸毛，并分析了金属和类金属。Al、As、Cr、Cu、Fe、Pb、Sb 和 Se 的平均浓度在来自两个地点或两性的鸬鹚胸羽中没有显着差异。然而，来自 Richland Creek 的鸬鹚羽毛中 Co、Mn、Ni 和 V 的平均浓度明显高于 LALIV 的鸬鹚羽毛。LALIV 鸬鹚的 Zn 浓度高于 Richland Creek 鸬鹚（p < 0.05)。总体而言，除了少数铅的异常值外，羽毛中重金属和类金属的浓度与来自世界各地的其他鸬鹚物种报告的浓度相似或更低，并且低于对该物种致命或亚致死影响的关注水平。