While urbanisation remains a major threat to biodiversity, urban areas can sometimes play an important role in protecting threatened species, especially exploited taxa such as parrots. The Hispaniolan Parakeet Psittacara chloropterus has been extirpated across much of Hispaniola, including from most protected areas, yet Santo Domingo (capital city of the Dominican Republic) has recently been found to support the island’s densest remaining population. In 2019, we used repeated transects and point-counts across 60 1 km² squares of Santo Domingo to examine the distribution of parakeets, identify factors that might drive local presence and abundance, and investigate breeding ecology. Occupancy models indicate that parakeet presence was positively related to tree species richness across the city. N-Mixture models show parakeet encounter rates were correlated positively with species richness of trees and number of discrete ‘green’ patches (> 100 m²) within the survey squares. Hispaniolan Woodpecker Melanerpes striatus, the main tree-cavity-producing species on Hispaniola, occurs throughout the city, but few parakeet nests are known to involve the secondary use of its or other cavities in trees/palms. Most parakeet breeding (perhaps 50–100 pairs) appears to occur at two colonies in old buildings, and possibly only a small proportion of the city’s 1500+ parakeets that occupy a single roost in street trees breed in any year. Our models emphasise the importance of parks and gardens in providing feeding resources for this IUCN Vulnerable species. Hispaniola’s urban centres may be strongholds for populations of parakeets and may even represent sources for birds to recolonise formerly occupied areas on the island.

尽管城市化仍然是对生物多样性的主要威胁，但城市地区有时在保护受威胁物种，尤其是鹦鹉等已开发生物群方面可以发挥重要作用。Hispaniolan长尾小鹦鹉Psittacara chloropterus已在包括大部分保护区在内的Hispaniola大部分地区被灭绝，但最近发现Santo Domingo（多米尼加共和国的首都）为该岛上剩余的人口提供了最大的支持。在2019年，我们在60 1 km ²范围内使用了重复的样线和点数圣多明各的正方形，以检查鹦鹉的分布，确定可能导致当地居民数量和数量丰富的因素，并调查繁殖生态学。居住模式表明，长尾小鹦鹉的存在与整个城市树木物种的丰富度呈正相关。N-混合模型显示，长尾小鹦鹉的遭遇率与树木的物种丰富度以及调查广场内离散的“绿色”斑块（> 100 m ²）的数量呈正相关。Hispaniolan啄木鸟Melanerpes striatus斯帕尼奥拉（Hispaniola）上主要的树洞生产物种遍布整个城市，但鲜有长尾鹦鹉巢涉及其在树木/棕榈树中或其他洞的二次利用。大多数长尾小鹦鹉繁殖（可能是50-100对）似乎是在旧建筑物的两个殖民地发生的，在任何一年中，全市1500多只长尾小鹦鹉都只在街头树丛中栖居，可能只占很小的比例。我们的模型强调了公园和花园在为该自然保护联盟易受害物种提供觅食资源方面的重要性。西班牙裔美国人的城市中心可能是长尾小鹦鹉种群的据点，甚至可能代表鸟类来重新定居岛上以前被占领的地区。