Redstart (F) - Phoenicuros Phoenicuros
The common redstart (Phoenicurus phoenicurus), or often simply redstart, is a small passerine bird in the redstart genus Phoenicurus. Like its relatives, it was formerly classed as a member of the thrush family, (Turdidae), but is now known to be an Old World flycatcher (family Muscicapidae).
Common redstarts prefer open mature birch and oak woodland with a high horizontal visibility and low amounts of shrub and understorey especially where the trees are old enough to have holes suitable for its nest. They prefer to nest on the edge of woodland clearings. In Britain it occurs primarily in upland areas less affected by agricultural intensification, but further east in Europe also commonly in lowland areas, including parks and old gardens in urban areas. They nest in natural tree holes, so dead trees or those with dead limbs are beneficial to the species; nestboxes are sometimes used. A high cover of moss and lichen is also preferred. They also use mature open conifer woodland, particularly in the north of the breeding range. Management to thin out the trees is thus favoured.
In England, where it has declined by 55% in the past 25 years, the Forestry Commission offers grants under a scheme called England's Woodland Improvement Grant (EWIG); as does Natural Englands Environmental Stewardship Scheme. It is a very rare and irregular breeding bird in Ireland, with between one and five pairs breeding in most years, mainly in County Wicklow.
It is a summer visitor throughout most of Europe and western Asia (east to Lake Baikal), and also in northwest Africa in Morocco. It winters in central Africa and Arabia, south of the Sahara Desert but north of the Equator, from Senegal east to Yemen. It is widespread as a breeding bird in Great Britain, particularly in upland broadleaf woodlands and hedgerow trees, but in Ireland it is very local, and may not breed every year.
The males first arrive in early to mid April, often a few days in advance of the females. Five or six light blue eggs are laid during May, with a second brood in mid summer in the south of the breeding range. It departs for Africa between mid-August and early October. It often feeds like a flycatcher, making aerial sallies after passing insects, and most of its food consists of winged insects. The call is chat-like and the alarm a plaintive single note, wheet, like that of many other chats.
The male’s song is similar to that of the Robin, but never more than a prelude, since it has an unfinished, feeble ending.
Tags: Redstart Redstarts Birds. Bird Avian Animal Animals Wildlife. Wildbirds Woodlands Wildlife Photography Jeff Lack Photography Trees Woodland Woods Farmland Forest Forests Forestry Moorland Moors Heathland Heathlands Heaths Song-Birds Summer Migrant Countryside Nature
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Dipper - Cinclus Cinclus
aka Water Ouzel
Dippers are members of the genus Cinclus in the bird family Cinclidae, named for their bobbing or dipping movements. They are unique among passerines for their ability to dive and swim underwater.
They have a characteristic bobbing motion when perched beside the water, giving them their name. While under water, they are covered by a thin, silvery film of air, due to small bubbles being trapped on the surface of the plumage.
Dippers are found in suitable freshwater habitats in the highlands of the Americas, Europe and Asia. In Africa they are only found in the Atlas Mountains of Morocco. They inhabit the banks of fast-moving upland rivers with cold, clear waters, though, outside the breeding season, they may visit lake shores and sea coasts.
The high haemoglobin concentration in their blood gives them a capacity to store oxygen greater than that of other birds, allowing them to remain underwater for thirty seconds or more, whilst their basal metabolic rate is approximately one-third slower than typical terrestrial passerines of similar mass. One small population wintering at a hot spring in Suntar-Khayata Mountains of Siberia feeds underwater when air temperatures drop below −55 °C (−67 °F).
Dippers are completely dependent on fast-flowing rivers with clear water, accessible food and secure nest-sites. They may be threatened by anything that affects these needs such as water pollution, acidification and turbidity caused by erosion. River regulation through the creation of dams and reservoirs, as well as channelization, can degrade and destroy dipper habitat.
Dippers are also sometimes hunted or otherwise persecuted by humans for various reasons. The Cyprus race of the white-throated dipper is extinct. In the Atlas Mountains dippers are claimed to have aphrodisiacal properties. In parts of Scotland and Germany, until the beginning of the 20th century, bounties were paid for killing dippers because of a misguided perception that they were detrimental to fish stocks through predation on the eggs and fry of salmonids.
Tags: Dipper Dippers Water Ouzel Water-Birds Waterways Water Birds. Bird Avian Animal Animals Wildlife. Wildbirds Wildlife Photography Jeff Lack Photography River Birds Rivers Streams Countryside Nature
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