The Common Nightingale, also known as the Rufous Nightingale or simply Nightingale (Luscinia megarhynchos), is a small passerine bird celebrated for its powerful and enchanting song. This bird, once thought to be a member of the thrush family, is now classified among the Old World flycatchers, Muscicapidae. It is part of a group often referred to as chats, which are more terrestrial in nature.
The Common Nightingale is slightly larger than the European Robin, measuring approximately 15–16.5 cm in length. It has a plain brown upper body contrasted by a reddish tail, while its underparts range from buff to white. Both sexes appear similar, with the eastern and Caucasian subspecies displaying paler upper parts and a more pronounced facial pattern, including a pale supercilium.
Nightingales favor breeding in forests and scrublands within the Palearctic region. They nest on or near the ground amidst dense vegetation, avoiding areas with closed canopies.
As migratory birds, nightingales breed across Europe and parts of the Palearctic, journeying to Sub-Saharan Africa to overwinter. Their distribution is more southerly compared to their close relative, the Thrush Nightingale.
The male Common Nightingale is renowned for its nocturnal singing, which is thought to attract a mate. Unpaired males are the most frequent nighttime vocalists. The bird's song is also a territorial anthem, particularly at dawn. In urban areas, nightingales sing more loudly to overcome background noise.
The male's song is a complex symphony of whistles, trills, and gurgles, noted for its loud, whistling crescendo. The nightingale also emits a frog-like alarm call when disturbed.
The Common Nightingale's breeding preferences are influenced by geographical factors such as altitude, temperature, precipitation, and aridity. They are ground nesters, often choosing sites with ample cover.
The Thrush Nightingale (Luscinia luscinia) is very closely related but can be distinguished by the absence of the loud whistling crescendo in its song.
As insectivorous birds, nightingales feed on a variety of insects and their larvae, which they forage for on the ground.
The Common Nightingale is classified as Least Concern by the IUCN. However, in the UK, the species is on the red list for conservation due to a contracting range and declining numbers. Conversely, the European population is estimated to be between 3.2 and 7 million pairs, indicating a stable status.