The Clay-colored Thrush (Turdus grayi) and Sooty Thrush (Turdus nigrescens) are medium-sized thrushes commonly found in Costa Rica. Both belong to the thrush family (Turdidae) and feed on fruits, insects, and other small invertebrates. The Clay-colored Thrush is widespread in lowlands and urban areas, with plain brown plumage, a pale throat, and a melodious song; it is Costa Rica’s national bird. The Sooty Thrush is a highland species restricted mainly to montane forests, especially above 1,500 meters. It has darker sooty-brown plumage, a yellowish bill, and prefers cooler cloud forest habitats. Their different distributions reflect their adaptation to distinct environments.
凤灰褐鸫（Turdus grayi）和乌黑鸫（Turdus nigrescens）都是哥斯达黎加常见的中型鸫类，隶属于鸫科（Turdidae）。两者都以果实、昆虫和其他小型无脊椎动物为食。黏土色鸫分布广泛，常见于低地森林、农田、城市公园和居民区，羽色朴素，整体呈土褐色，喉部颜色较浅，并以优美的鸣唱闻名；它还是哥斯达黎加的国鸟。烟色鸫则主要分布于高海拔山区，尤其是1500米以上的云雾森林，具有较深的烟褐色羽毛、黄色嘴喙，更适应凉爽湿润的山地环境。两者不同的分布范围体现了它们对不同生态环境的适应。
Clay-colored Thrush 灰褐鸫
Sooty Thrush乌黑鸫
