Neotropic Cormorants (Phalacrocorax brasilianus) are common seabirds along the Peruvian coast. They frequently perch on trees, poles and port structures in urban areas, causing discomfort and esthetic problems due to the dropping of their feces on infrastructure and people. Hundreds of these birds rest on lighting poles and telephone cables along a 12.7 km highway in the coastal strip of the city of Lima, Peru. We hypothesized that the distribution of the cormorants along this highway is clustered and could be associated with physical features of both the coast and the adjacent marine area. Half-monthly or monthly surveys were performed from July 2018 to March 2020 in the Circuito de Playas de la Costa Verde highway. At each survey, cormorants were counted per lighting pole and adjacent telephone cables (pole-cable) at four count hours (0600 h, 1000 h, 1400 h and 1800 h). Our results revealed that daily bird numbers varied from 46 to 457 individuals and that only 17% of the total number of pole-cables (N = 651) was occupied once by at least one individual. The number of cormorants also varied between count hours within the same day (higher numbers at 1000 h and 1400 h). Birds were clustered into a maximum of five hotspots along the highway. According to the Akaike’s information-theoretic approach applied to Poisson GLMM, higher numbers of cormorants on pole-cables were associated mainly to a closer distance from these structures to the shoreline and to the surf zone, suggesting that Neotropic Cormorants may select such pole-cables as optimal sites for sighting and receiving clues of prey availability. Based on the results, the use of nonlethal deterrents and the relocation of these birds to other perching structures on nearby groynes could be the most suitable and eco-friendly solution for the problems caused by their droppings.

中文翻译：

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秘鲁利马沿沿海公路的新近性（（Phalacrocorax brasilianus）的非随机空间分布

新向性Cor（巴西ala））是秘鲁海岸沿岸的常见海鸟。他们经常栖息在城市地区的树木，电线杆和港口结构上，由于粪便对基础设施和人员的流失而引起不适和美观问题。在秘鲁利马市沿海地带的一条12.7公里的高速公路上，成百上千的鸟类栖息在灯杆和电话线上。我们假设that沿这条公路的分布是聚类的，并且可能与海岸和邻近海域的物理特征有关。从2018年7月至2020年3月在Circuito de Playas de la Costa Verde高速公路上进行了半个月或每月一次的调查。在每个调查中，在四个计数小时（0600小时，1000小时，1400小时和1800小时）对每个灯杆和相邻电话电缆（电线杆）的cor进行计数。我们的研究结果表明，每天的鸟类数量从46到457人不等，并且至少有一个人占据了极缆总数（N = 651）的17％。在同一天的计数小时之间，count的数量也有所不同（1000 h和1400 h的数量更多）。鸟类沿着高速公路最多被聚集成五个热点。根据应用于Poisson GLMM的Akaike的信息理论方法，杆缆上s的数量增加，主要是由于这些结构与海岸线和冲浪区之间的距离更近，这表明Neotropic Cormorants可能会选择此类杆缆作为寻找和接收猎物可用性线索的最佳地点。根据结果​​，