Darksound is an open-source and code-based dataset for the evaluation of unsupervised meta-learning algorithms in the context of ecoacoustics. This dataset is composed of regions of interest (ROIs) of nocturnal and crepuscular bird species living in tropical environments that were automatically segmented using the Python package Bambird (Michaud et al., 2023). The dataset is split into two sets, with a training set and a test set.