Whitethroat
Encyclopedia
The Common Whitethroat, Sylvia communis, is a common and widespread typical warbler
which breeds throughout Europe
and across much of temperate western Asia
. This small passerine
bird
is strongly migratory
, and winters in tropical Africa
, Arabia
and Pakistan
.
This is one of several Sylvia species that has distinct male and female plumage
s. Both sexes are mainly brown above and buff below, with chestnut fringes to the secondary remiges. The adult male has a grey head and a white throat. The female lacks the grey head, and the throat is duller. The Whitethroat's song is fast and scratchy, with a scolding tone.
This species was believed by some to be closely related to the Lesser Whitethroat
, the species
having evolved only during the end of the last ice age similar to the Willow Warbler
and Chiffchaff
s. But researchers learned soon that this is not correct, and now it is known that whitethroats are unreliable morphological
markers for relationships in Sylvia. Chestnut wing patches, like whitethroats, seem to be plesiomorphic, but indicate phylogeny better. Nonetheless, apart from the Whitethroat not being closely related to the Lesser Whitethroat group, little can be resolved as it seems a fairly basal
taxon
.(Helbig 2001, Jønsson & Fjeldså 2006)
This is a bird
of open country and cultivation, with bushes for nesting. The nest is built in low shrub
or bramble
s, and 3-7 eggs are laid. Like most "warbler
s", it is insectivorous, but will also take berries and other soft fruit
.
Typical warbler
The typical warblers are small birds belonging to the genus Sylvia in the "Old World warbler" family Sylviidae. There are 28 species currently included in the genus, including five species formerly treated in the genus Parisoma, a treatment which left Sylvia paraphyletic...
which breeds throughout Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
and across much of temperate western Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...
. This small passerine
Passerine
A passerine is a bird of the order Passeriformes, which includes more than half of all bird species. Sometimes known as perching birds or, less accurately, as songbirds, the passerines form one of the most diverse terrestrial vertebrate orders: with over 5,000 identified species, it has roughly...
bird
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...
is strongly migratory
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...
, and winters in tropical Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
, Arabia
Arabian Peninsula
The Arabian Peninsula is a land mass situated north-east of Africa. Also known as Arabia or the Arabian subcontinent, it is the world's largest peninsula and covers 3,237,500 km2...
and Pakistan
Pakistan
Pakistan , officially the Islamic Republic of Pakistan is a sovereign state in South Asia. It has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by Afghanistan and Iran in the west, India in the east and China in the far northeast. In the north, Tajikistan...
.
This is one of several Sylvia species that has distinct male and female plumage
Plumage
Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...
s. Both sexes are mainly brown above and buff below, with chestnut fringes to the secondary remiges. The adult male has a grey head and a white throat. The female lacks the grey head, and the throat is duller. The Whitethroat's song is fast and scratchy, with a scolding tone.
This species was believed by some to be closely related to the Lesser Whitethroat
Lesser Whitethroat
The Lesser Whitethroat is a common and widespread typical warbler which breeds in temperate Europe, except the southwest, and in western and central Asia. This small passerine bird is strongly migratory, wintering in Africa just south of the Sahara, Arabia and India.Unlike many typical warblers,...
, the species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
having evolved only during the end of the last ice age similar to the Willow Warbler
Willow Warbler
The Willow Warbler is a very common and widespread leaf warbler which breeds throughout northern and temperate Europe and Asia, from Ireland east to the Anadyr River basin in eastern Siberia...
and Chiffchaff
Chiffchaff
The Common Chiffchaff, or simply the Chiffchaff, is a common and widespread leaf-warbler which breeds in open woodlands throughout northern and temperate Europe and Asia....
s. But researchers learned soon that this is not correct, and now it is known that whitethroats are unreliable morphological
Morphology (biology)
In biology, morphology is a branch of bioscience dealing with the study of the form and structure of organisms and their specific structural features....
markers for relationships in Sylvia. Chestnut wing patches, like whitethroats, seem to be plesiomorphic, but indicate phylogeny better. Nonetheless, apart from the Whitethroat not being closely related to the Lesser Whitethroat group, little can be resolved as it seems a fairly basal
Basal (phylogenetics)
In phylogenetics, a basal clade is the earliest clade to branch in a larger clade; it appears at the base of a cladogram.A basal group forms an outgroup to the rest of the clade, such as in the following example:...
taxon
Taxon
|thumb|270px|[[African elephants]] form a widely-accepted taxon, the [[genus]] LoxodontaA taxon is a group of organisms, which a taxonomist adjudges to be a unit. Usually a taxon is given a name and a rank, although neither is a requirement...
.(Helbig 2001, Jønsson & Fjeldså 2006)
This is a bird
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...
of open country and cultivation, with bushes for nesting. The nest is built in low shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...
or bramble
Bramble
Brambles are thorny plants of the genus Rubus, in the rose family . Bramble fruit is the fruit of any such plant, including the blackberry and raspberry. The word comes from Germanic *bram-bezi, whence also German Brombeere , Dutch Braam and French framboise...
s, and 3-7 eggs are laid. Like most "warbler
Warbler
There are a number of Passeriformes called "warblers". They are not particularly closely related, but share some characteristics, such as being fairly small, vocal and insectivorous....
s", it is insectivorous, but will also take berries and other soft fruit
Fruit
In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...
.