Sunday 31 December 2017
Saturday 30 December 2017
Friday 29 December 2017
29-12-2017 MONTE CORONA, VALENCIA - SARDINIAN WARBLER (FEMALE) (Sylvia melanocephala)
25-12-2016 ADOR CAMPO, VALENCIA - LITTLE OWL (Athene noctua)
This owl usually perches in an elevated position ready to swoop down on any small creature it notices. It feeds on prey such as insects and earthworms, as well as small vertebrates including amphibians, reptiles, birds and mammals. It may pursue prey on the ground and it caches surplus food in holes or other hiding places. A study of the pellets of indigestible material that the birds regurgitate found mammals formed 20 to 50% of the diet and insects 24 to 49%. Mammals taken included mice, rats, voles, shrews, moles and rabbits. The birds were mostly taken during the breeding season and were often fledglings, and including the chicks of game birds. The insects included Diptera, Dermaptera, Coleoptera, Lepidoptera and Hymenoptera. Some vegetable matter (up to 5%) was included in the diet and may have been ingested incidentally.
The little owl is territorial, the male normally remaining in one territory for life. However, the boundaries may expand and contract, being largest in the courtship season in spring. The home range, in which the bird actually hunts for food, varies with the type of habitat and time of year. Little owls with home-ranges that incorporate a high diversity of habitats are much smaller (< 2 ha) than those which breed in monotonous farmland (with home-ranges over 12 ha). Larger home-ranges result in increased flight activity, longer foraging trips and fewer nest visits.
If a male intrudes into the territory of another, the occupier approaches and emits its territorial calls. If the intruder persists, the occupier flies at him aggressively. If this is unsuccessful, the occupier repeats the attack, this time trying to make contact with his claws. In retreat, an owl often drops to the ground and makes a low-level escape. The territory is more actively defended against a strange male as compared to a known male from a neighbouring territory; it has been shown that the little owl can recognise familiar birds by voice.
The little owl is partly diurnal and often perches boldly and prominently during the day. If living in an area with a large amount of human activity, little owls may grow used to humans and will remain on their perch, often in full view, while people are around. The little owl has a life expectancy of about 16 years. However, many birds do not reach maturity; severe winters can take their toll and some birds are killed by road vehicles at night, so the average lifespan may be on the order of 3 years.
25-12-2016 ADOR CAMPO, VALENCIA - SARDINIAN WARBLER (MALE) (Sylvia melanocephala)
The Sardinian warbler (Curruca melanocephala ) is a common and widespread typical warbler from the Mediterranean region. Like most Curruca species, it has distinct male and female plumages. The adult male has a grey back, whitish underparts, black head, white throat and red eyes. Plumages are somewhat variable even in the same locality, with the intensity of a reddish hue on upper- and/or underside that varies from absent to (in some subspecies) pronounced. The female is mainly brown above and buff below, with a grey head. The Sardinian warbler's song is fast and rattling, and is very characteristic of the Mediterranean areas where this bird breeds.
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It breeds in the southernmost areas of Europe and just into Asia in Turkey and the eastern end of the Mediterranean. This small passerine bird, unlike most "warblers", is not particularly migratory, but some birds winter in north Africa, and it occurs as a vagrant well away from the breeding range, as far as Great Britain.
This is a bird of open country and cultivation, with bushes for nesting. The nest is built in low shrub or brambles, and 3-6 eggs are laid. Like most "warblers", it is insectivorous, but will also take berries and other soft fruit.
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Slender warbler with long tail, short wings and pointed bill. Restless and alert with frequently raised crown feathers and dark eye framed in red. Male with black head, white throat, greyish upperparts and off-white underparts. Female less striking, with grey head grey-brown upperparts, distinct buff flanks and paler belly. Both sexes with white sides and corners to tail. Rarely sits exposed, and usually betrays itself by it's frequently used scolding call. Often just glimpsed when it dives into a bush, spreading it's tail and showing the white markings.
Scolding call a machinegun-like, short and harsh rattle. Usually consisting of 2-5 notes with some variation in timbre and delivery. Song a stream of varied, short notes, constantly interspersed with variations of the scolding call. Phrases 2-5 sec. long. Easily confused with several other sylvias, especially in the eastern part of the Mediterranean. Rattling sound (in both song and call) differs from most other congeners by being considerably harder and more "smacking". Dartford Warbler most similar, but usually betrays itself by it's characteristic and frequently used contact call (also interspersed when singing).
Wednesday 27 December 2017
Saturday 23 December 2017
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