This study showed from the analysis of 180 droppings of the Grey Wagtail Motacilla cinerea harvested during a period of one year from the Babors Mountains (Bejaia, Algeria) that insects formed the ...main part of the diet (85.9% of identified items). The other food categories included arachnids, crustaceans and gastropods. Among the insects, Coleoptera (beetles) was the main order consisting of 37.4% of identified items. The most frequently recorded family was Baetidae (Ephemeroptera; 9.8%). At the prey-taxa level, an unidentified Baetidae was the most frequently encountered and represented 9.7% of the diet. This species was present in the diet throughout the year. Prey taxa classified as aquatic were more frequently encountered (54.2%) compared with those considered terrestrial. This study showed that seasonal fluctuations in the diet of Grey Wagtail were very weak. Prey size ranged from 0.2 to 30.5 mm, with an average of 8.9 mm. Overall, this study showed that Grey wagtail fed on species of a wide variety of taxa, with little variation across the year.
Predation of vertebrates by Mallards (Anas platyrhynchos) has rarely been documented and only in relation to fish and amphibians. Mallard foraging behavior was observed at a reservoir bordering ...Semenic-Caras Gorges National Park in southwest Romania. A group of Mallards comprising one adult female and 10 subadults was recorded hunting, killing and consuming hatching year passerine birds of two species, a Grey Wagtail (Motacillacinerea) and a Black Redstart (Phoenicuros ochruros). These are the first records of hunting of birds by wild Mallards. This extraordinary new behavior represents substantial diet expansion for this widespread and abundant duck species.
The diet composition of the Grey Wagtail Motacilla cinerea of the Babor Range is followed by analysis of faecal samples (90 faeces) before and during the breeding season 2010. The Grey Wagtail's diet ...varies depending on the stage of the breeding cycle at the southern edge of their breeding area in North Africa (Bejaia). The diet consists predominantly of aquatic preys (51.79%), with Coleoptera being the most frequent constituent (n=331, 45.5%). During the pre-laying period (February–March), the diet was variable (91 prey-taxa and H’=3,36 bits) and preys of medium size (5 to 8mm) were most common. During the incubation period (April–May), preys were mainly aquatic (60%) and larger (20 to 32mm). At the end of the breeding season (June–July), there was a greater occurrence of terrestrial preys (31 aquatic versus 30 terrestrial taxa).
Le régime alimentaire de la Bergeronnette des ruisseaux Motacilla cinerea de la région de la Kabylie des Babors est étudié avant et durant la saison de nidification 2010 par l’analyse des échantillons de fientes (90 fientes). À la limite sud de son aire de nidification en Afrique du Nord (Bejaia), le régime alimentaire des Bergeronnettes des ruisseaux varie en fonction des périodes du cycle de nidification. Le menu trophique de l’espèce est basé sur les proies aquatiques (51,79 %). Parmi ces proies, les Coléoptères sont les plus consommés (331 individus : 45,52 %). Durant la période pré-positale (février–mars), le régime alimentaire de l’espèce est assez diversifié (91 taxons proies et H’=3,36 bits), les proies de taille moyenne (5 à 8mm) étant prédominantes. En période de couvaison, l’espèce capture principalement les proies aquatiques (60 %), en général de grande taille (20 à 32mm). En fin de saison de reproduction (nourrissage, juin–juillet), la stratégie alimentaire des Bergeronnettes évolue et change en exploitant le milieu terrestre (31 proies aquatiques contre 30 proies terrestres).
Provider: - Institution: - Data provided by Europeana Collections- pg(s) 195–199- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal ...Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
The paper reports on the breeding biology of the endemic subspecies of the Grey Wagtail in a human transformed area (banana plantations) on Tenerife (Canary Islands). Clutch size (3.96 ± 0.6) was ...lower than in continental zones, probably because of the climatic stability of the islands. Furthermore, the distance from the nest to the nearest water source and the length of the breeding season (late February—June) were greater than in other European populations. Some breeding traits fit the predictions of the so-called insular “syndrome”. Possible mechanisms underpinning these differences in breeding traits are discussed.
Provider: - Institution: - Data provided by Europeana Collections- Grey Wagtail (Motacilla cinerea) is a common species in Europe. In breeding time it occurs near running water. Their nest is built ...by both male an female adult, and it is placed near the water, between stones and roots.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Motacilla cinerea Valverde Gómez, José Antonio, 1926-2003
09/2008
Web Resource
Provider: - Institution: Gredos. Repositorio Documental de la Universidad de Salamanca - Data provided by Europeana Collections- Recopilación de observaciones de la Lavandera cascadeña (Motacilla ...cinerea) realizadas durante varias visitas a la ribera del Pisuerga, dentro de la provincia de Valladolid, entre el 19 de febrero de 1948 y el 16 de diciembre de 1949.- Compilation of observations of the Grey Wagtail (Motacilla cinerea) carried out through some trips to the riverside of Pisuerga River passing through the province of Valladolid, between the 19th of February of 1948 and the 16th of December of 1949.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Variant call.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal ...Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
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