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The Teno range of mountains, located in the northwest Tenerife, Canary Islands, is still a refuge for the flora and fauna of the island. Until now, at least four native species of reptiles, 232 of birds (both breeding and migrant), and six mammals have been recorded for that site. For some of these animals, such as Canarian Spotted Lizard (Gallotia...
Citations
... Although moorhens may occupy natural habitats (e.g. permanent pools in ravines), both species usually use artificial irrigation reservoirs for nesting and wintering on Tenerife (Lorenzo 2007, Rodríguez & Rodríguez 2011, Rodríguez et al. 2014. Coots typically prefer larger ponds with open water, whereas moorhens also occupy small pools with vegetated shores (pers. ...
... obs.). As freshwater wetlands are scarce on the Canary Islands, both species frequently share breeding sites (Martín & Lorenzo 2001, Rodríguez et al. 2014). ...
... depth) with vertical concrete sides devoid of vegetation, at Los Silos (Fig. 1). I have visited this site, where wintering and breeding individuals of both species are present, monthly since 2000 (Rodríguez & Rodríguez 2011, Rodríguez et al. 2014). Usually, one or two breeding pairs of coots are present and a pair of moorhens has nested in some years (Rodríguez et al. 2014). ...
Foulques macroules Fulica atra tuant des Gallinules poule-d'eau Gallinula chloropus adultes à Tenerife, Îles Canaries. Deux cas d'une Foulque macroule Fulica atra adulte tuant une Gallinule poule-d'eau Gallinula chloropus dans un réservoir à Tenerife, Îles Canaries, sont documentés. Les deux incidents ont probablement été perpétrés par le même mâle territorial. Bien que les membres des Rallidae présentent un comportement agonistique à la fois intraspécifique et interspécifique, les preuves publiées de mise à mort sont rares et se réfèrent principalement à l'infanticide. Summary. Two cases of an adult Eurasian Coot Fulica atra killing an adult Common Moorhen Gallinula chloropus at a reservoir on Tenerife, Canary Islands, are documented. The two events were probably perpetrated by the same territorial male. Although members of the Rallidae show both intraspecific and interspecific agonistic behaviour, published evidence of such killings is scarce and mainly refers to infanticide.
... In the afternoon of 21 November 2017, I was inspecting one of my 'local patches' at the manure heap at El Espaldar, Montaña de Taco, Buenavista del Norte, in the north-western part of Tenerife, Canary Islands, where concentrations of insects attract birds to feed (Rodríguez et al 2014). I enjoyed views of several migratory birds such as Common Chiffchaffs Phylloscopus collybita, two Black Redstarts Phoenicurus ochruros, a Northern Wheatear Oenanthe oenanthe, and c 25 White Wagtails Motacilla alba. ...
... In this paper, we survey the cliff-nesting raptor community of Teno massif (hereafter Teno) situated in Tenerife (Canary Islands), that constitute one of the most biodiverse protected areas within the European Union (Sundseth 2005), where still many endangered and/or exclusive species of plants and animals (land snails, insects, lizards, and birds) persist (Reyes-Betancort et al. 2008;Martín 2010;Rodríguez et al. 2014). We provide population sizes, compare breeding habitat features among species, and analyze factors affecting abundance and diversity of six species of raptors and the common raven. ...
... Three types of forest associated to climatic and geographic characteristics occur at different altitudes and orientations: 1) the endangered thermophilous forest at up to 200 m a.s.l. in slopes oriented to the North and between 500 and 900 m a.s.l. in the Southern ones, 2) the laurel forest in the North faces at 350-1,300 m a.s.l., and 3) small representations of pine woodlands at the highest elevations (Del Arco et al. 2006). Some areas at high altitudes have been deforested to create pasture lands for domestic livestock, mainly goats (Rodríguez et al. 2014). ...
... The Canarian diurnal breeding raptor community is currently composed by 7 species, the majority of them considered endemic subspecies (Egyptian vulture Neophron percnopterus majorensis, common buzzard Buteo buteo insularum, Macaronesian sparrowhawk Accipiter nisus granti, osprey Pandion haliaetus, common kestrel Falco tinnunculus [subspecies canariensis and dacotiae], Eleonora's falcon Falco eleonorae and Barbary falcon Falco peregrinus pelegrinoides). The red kite Milvus milvus also bred on the archipelago, but became extinct in the 1960s (Madroño et al. 2004;Rodríguez et al. 2014). At least 2 breeding attempts of the black kite Milvus migrans have been also recently recorded on Gran Canaria (Trujillo 2009). ...
The specific spatial distribution and habitat association -strongly influenced by environmental factors or competitive interactions- are major issues in ecology and conservation. We located and georeferenced nesting sites of five cliff-nesting raptors (Egyptian vulture Neophron percnopterus, common buzzard Buteo buteo, osprey Pandion haliaetus, common kestrel Falco tinnunculus, Barbary falcon Falco peregrinus pelegrinoides), and common raven Corvus corax on one of the most biodiverse hotspot within the Canary Islands (Teno, Tenerife). We used generalised linear models to evaluate the factors affecting abundance, richness and intra- and interspecific interactions. Raptor abundance increased with slope, shrub-covered area, and habitat diversity, and decreased with altitude, and forested and grassed areas. Richness increased with slope and decreased with altitude. Threatened species (osprey, Barbary falcon and raven) occupied cliffs farther away from houses and roads, and more rugged areas than the non-threatened species. The models suggested that the probability of cliff occupation by buzzards, falcons and ravens depended only on inter-specific interactions. Buzzard occupation increased with the distance to the nearest raven and kestrel nests, whereas falcons and ravens seek proximity to each other. Teno holds between 75-100% of the insular breeding populations of the most endangered species (osprey and raven), indicating the high conservation value of this area. Our study suggests that the preservation of rugged terrains and areas of low human pressure are key factors for raptor conservation and provide basic knowledge on the community structure and habitat associations to develop appropriated management actions for these fragile island populations.
... J. Bacallado). En dicho lugar la especie es accidental y se observa de forma esporádica (Rodríguez et al., 2014). ...
... Despite several Canarian endemic plants showing flowers with traits of bird pollination (the so-called ornithophilous syndrome), no specialist nectar-feeding birds live on the archipelago , Ollerton et al. 2009). Opportunistic birds can visit several native bird-flowers , Rodríguez-Rodríguez & Valido 2008, Ortega-Olivencia et al. 2012 as well as other non-native (cultivated or introduced) plants to obtain nectar (Vogel et al. 1984, Trujillo 1992, Martín & Lorenzo 2001, Rodríguez et al. 2014. In Europe a total of 46 bird species have been recorded visiting the flowers of 95 plant species (both exotic and native). ...
... Fringillidae: Atlantic Canary Serinus canaria and Common Chaffinch Fringilla coelebs) have been mentioned in the literature obtaining nectar from native bird-flower plants (Vogel et al. 1984, Rodríguez-Rodríguez & Valido 2008, Ortega-Olivencia et al. 2012. Other species could be potential nectar feeders because they consume fruits and plant material, such as, for example, the endemics Bolle's Columba bollii and White-tailed Laurel Columba junoniae pigeons, Blackbird Turdus merula, Common Raven Corvus corax, European Robin Erithacus rubecula or Spanish Sparrow Passer hispaniolensis (Martín & Lorenzo 2001, Rodríguez et al. 2014). Some evidence such as feeding behaviour, pollen traces on the head, and the presence of pollen and sugar remains in droppings of European warblers Sylvia spp. ...
... During the last few years, Common Ravens feeding on nectar of the century plant have been observed in the Teno massif, north-west Tenerife (Rodríguez et al. 2014), where the bulk of its threatened population (less than 20 pairs) still survive (Siverio et al. 2010). Canarian population diet has been studied based on pellet analysis, reporting food items with hard structures, e.g. ...
Capsule: Flowers of an invasive plant species are more visited by native birds than flowers of ornithophilous endemic plants.
Aims: To describe the bird guild and its behaviour visiting the century plant Agave americana in an insular environment and to determine which factors are affecting visitation rates.
Methods: We noted number and species of birds visiting inflorescences on Tenerife, Canary Islands. We used multimodel inference of generalized linear models to analyse the factors affecting the number of visits and the visitor species richness.
Results: Eighty-one per cent of inflorescences were visited by eight native bird species. All species fed on nectar and only the Atlantic Canary fed also on pollen. Foraging behaviour varied among species. Visitation rate increased with density and diversity of birds and flower characteristics and decreased through the day. The number of species visiting the inflorescences increased with diversity and density of birds in the surroundings and decreased through the day.
Conclusion: The native bird community uses the invasive century plant as a feeding resource at a higher rate than it uses endemic ornithophilous plants. This could have negative effects for the pollination of endemic plants, but positive effects for birds.