Luscinia megarhynchos
common nightingale

Common nightingales (Luscinia megarhynchos) have a large geographic range. They are native to, and widely distributed in, central and southern Europe and central Asia. Locally distributed in the British Isles, they are more commonly seen in France, Italy, and Spain during the summer when they nest. Common nightingales prefer milder and warmer climates than their close relatives, thrush nightingales (Luscinia luscinia). During the winter, common nightingales migrate to the tropics of northern and central Africa, including western Sahara, Egypt, Cote d'Ivoire, Kenya, Cameroon, and Nigeria, among others. ("Luscinia Megarhynchos", 1999; "Luscinia Megarhynchos", 2007; Uri, 2002)

Common nightingales typically prefer habitats with mild to warm climates. They can be found in areas with dense, low thicket growth or woodlands with young trees and bare ground underneath. They prefer habitats with coppiced tree species, and are most often found in hazel trees. This is ideal for Luscinia megarhynchos because it provides a good hiding place from predators while allowing them to search for food and make nests safely. Due to the recent decline in the population of common nightingales in England, researchers have investigated whether a cutback of suitable habitats may have caused the decline. Various factors, including climate change, changes in the quality of habitats, the introduction of Reeve's muntjacs (Muntiacus reevesi), and the re-introduction of roe deer (Capreolus capreolus) have all contributed to population declines in Britain. Reeve's muntjacs and roe deer graze in the woods typically inhabited by common nightingales, which reduces the density of shrubs. (Hewson, et al., 2005; Mead, 1998; Wilson, et al., 2002)

Common nightingales are rather plain in appearance compared to their remarkable singing abilities. They are slightly larger than European robins (Erithacus rubecula) and their body is brown in color except on the underside, where the feathers become lighter. They have broad, chestnut colored tails, and large, black eyes which are adorned with a white ring around each eye. Males and females are similar in appearance, except that males tend to be slightly larger, with larger wingspans. However, females sometimes weigh more because males have higher metabolic rates due to their tendency to sing. ("Luscinia Megarhynchos", 1999; "Nightingale", 2008; Faye, 2008; Mead, 1998; Robinson, 2008; Thomas, 2002)

One of the most notable characteristics of common nightingales is their beautiful singing ability, especially by male birds. Common nightingales are well known for singing during the night, hence their name. Older males have improved mating success due to their larger song repertoire and territory, which attracts females better. They are reported to have a 53% larger song repertoire than younger males, and the repertoire is reported to consist of approximately 180 to 260 song variations. Researchers have not discovered yet why song repertoire increases so dramatically in older males. Upon mating successfully, males change the types of their songs by reducing their whistle songs, which are used to attract females, and ceasing their nocturnal songs until their mate lays eggs. (Kiefer, et al., 2006; Kunc, et al., 2005; Kunc, et al., 2006a; Kunc, et al., 2006b; Schmidt, et al., 2006; Thomas, 2002)

The mating season is a highly competitive time for common nightingales. It takes a tremendous amount of energy to sing and male songs may reflect their body condition, resulting in female selection of the best singers (Schmidt et al., 2005). More aggressively singing males will have a better chance of mating success. Up to 49% of males may not successfully find a mate. Males defend their nest territory very aggressively, fighting and chasing away trespassing birds. (Kiefer, et al., 2006; Kunc, et al., 2005; Kunc, et al., 2006a; Kunc, et al., 2006b; Rothenberg, 2005; Schmidt, et al., 2006)

Common nightingales are seasonally monogamous. ("Nightingale", 2008; Robinson, 2008)

Breeding in common nightingales takes place around mid-May each year. Nests are usually set up by the female among the twigs found in dense shrubs, using dried leaves and grass. Incubation lasts approximately thirteen to fourteen days by the female. Each egg is 21 by 16 mm, weighing 2.7 g, of which 6% is the shell. Common nightingales reach sexual maturity at the age of one. ("Nightingale", 2008; Robinson, 2008)

Before the eggs hatch, the female incubates the eggs, and both parents project the eggs from predators. When the eggs hatch, both parents take care of the offspring by feeding and nurturing them until they can survive on their own. The fledgling period lasts between 11 to 13 days. (Robinson, 2008)

Common nightingale typical lifespan ranges from one to five years. The oldest recorded age is at 8 years and 4 months old. Although little is known about what typically limits the lifespan of common nightingales, there is no doubt that predation and habitat reduction contribute to the relatively short lifespan. There has been no recorded lifespan of a nightingale in captivity. ("Common Nightingale", 2008; Rothenberg, 2005)

Common nightingales are solitary outside of the breeding season. They migrate to the African tropics in the winter. Common nightingales are territorial, but there are no social hierarchies. Males become even more territorial during mating season, when they engage in song contests to attract females. Common nightingale songs can be divided into two categories, whistle songs and non-whistle songs. Whistle songs are distinct and used most often in territorial defense and mate attraction (Kiefer et al., 2006). Males respond aggressively to other males who may be entering their territory.

Not much is known about common nightingale behavior because they are small and prefer to hide in thick scrubs. Unless migrating, they fly only short distances, from branch to branch. It is more common for people to hear them than see them. (Kiefer, et al., 2006; Kunc, et al., 2006a)

Home range sizes are not known in common nightingales. (Kiefer, et al., 2006; Kunc, et al., 2006a)

Common nightingales communicate with others by singing whistle and non-whistle songs. Whistle songs are used during breeding season. The number of whistle songs decrease when males successfully mate. When trying to attract a female, a male will sing for up to 50% of the night. Males lose weight each night when they sing (Thomas, 2002). There are several metabolic consequences to singing at night, one of which is that common nightingales must spend time during the day looking for food in order to build up a larger body reserve, thereby giving up the time that it could take to sing and increasing the chance of being seen by predators. (Kunc, et al., 2005; Kunc, et al., 2006a; Kunc, et al., 2006b; Thomas, 2002)

Common nightingales are primarily insectivores, preying on insects such as beetles, ants, worms, and spiders found on the ground. They also eat insect larvae. In the autumn common nightingales sometimes eat berries and other fruits. ("Nightingale", 2008; Mead, 1998; Robinson, 2008)

The major known predators of common nightingales are tawny owls, Strix aluco. In order to decrease their risk of predation, common nightingales tend to reduce the amount and volume of night time singing when not actively attracting mates. (Rothenberg, 2005)

Common nightingales, like many songbirds, play an important role in the ecosystem by eating insects that may damage leaves and the growth of trees. Tawny owls prey on common nightingales. (Rothenberg, 2005)

Many people are fans of common nightingale songs. These birds are important in western European culture. Perhaps one of the most famous roles is in the John Keats poem, "Ode to a Nightingale," in which the poet describes the beauty of a nightingale's song. Tchaikovsky was said to be inspired by the nightingale's song while composing "The Nightingale", op. 60 no. 4. Stravinsky also composed a piece referring to the nightingale's song in "Song of the Nightingale and Chinese March". Including research and education, common nightingales are important for birdwatchers and people who appreciate the beauty of their songs. ("Nightingale", 2008)

There are no known adverse effects of Luscinia megarhynchos on humans.

Changes in common nightingale habitat quality and quantity in Britain has resulted in a decline in the local population over the last two decades. The decline is also affected by predation pressure and introduction of non-native species such as roe deer (Capreolus capreolus) which graze in nightingale habitat. Also, while common nightingales prefer a mild climate, Britain's climate has recently become colder and wetter, which also contributes to the population decline. There has been speculation that these birds are facing problems in their wintering grounds due to changes in climate and habitat as well. According to The State of Europe’s Common Birds 2007 report, common nightingales experienced a 63% population decline in Europe between 1980 and 2005. Due to their importance in Britain, common nightingales have been placed on the Amber List. ("Common bird study reveals further decline of Europe's farmland birds", 2007; "Luscinia Megarhynchos", 2007; "Nightingale", 2008; Hewson, et al., 2005; Mead, 1998; Wilson, et al., 2002)

Common nightingales, Luscinia megarhynchos, are also known as rufous nightingales. They are the national birds of Iran. (Faye, 2008)