) per inserire i nomi delle specie nella tua lingua. I nomi delle specie verranno automaticamente tradotti per gli altri utenti!
Carica immagini
I formati di immagine permessi sono jpeg, png, gif
Dimensione massima dei file 20MB
Descrizione
The Kanderdelta is an artificial delta created in the 18th century. Before its construction, the Kander River bypassed Lake Thun entirely. The river deposits substantial amounts of gravel into the delta and the lake, necessitating regular gravel extraction. At the same time, these gravel banks have become one of the few remaining breeding sites for the Corriere piccolo in Switzerland.
The delta features a dynamic mix of floodplain forests, still and flowing waters, gravel banks, and steep riverbanks, forming a unique and valuable natural habitat - a rarity in Switzerland. This exceptional ecosystem lies close to the city of Thun, resulting in conflicts between recreational use and conservation efforts. While the lakeshore is accessible year-round, there are even dedicated barbequing areas at the outer edge of the delta. A ranger frequently patrols the area, offering useful information to visitors.
Although the Corriere piccolo is the region's flagship species, over 200 bird species have been recorded here. The steep banks provide nesting sites for Martin pescatore and Merlo acquaiolo. In the floodplain forests, breeding birds like Picchio rosso minore, Cuculo, and possibly Lodolaio, which can be observed from April to September, find their habitats. Rigogolo and Usignolo are relatively common, possibly you might see a Nitticora or Garzetta. Sgarza ciuffetto has also been observed.
Waders and waterbirds use the delta as a stopover during spring and autumn migrations. The Pantana is among the most frequent visitors. Other common sightings during migration seasons include Piro piro boschereccio, Piro piro culbianco, Corriere grosso, and Gambecchio comune. Less common species like Voltapietre and Gambecchio nano make appearances. During these times, the reeds are utilized by Pendolino and Falco di palude.
In spring, the delta additionally hosts Pettegola and Combattente, as well as Chiurlo piccolo and Gabbiano corallino. Inland, Codirosso finds refuge in the floodplain forest. Later in spring and into summer, the Luì verde appears here, and over the lake, migrating Mignattino comune can be spotted. Exceptional sightings include its relatives, the Mignattino alibianche, Mignattino piombato, Fraticello, Sterna zampenere, and Beccapesci.
In late summer, the rare Piovanello tridattilo is occasionally reported, while from September through May, Volpoca can be seen resting on the lake. Autumn brings irregular sightings of Pivieressa, followed later by the more frequent Piovanello pancianera. From winter to spring, Mestolone and Fischione rest on the lake, but rarer birds are also possible, as one sighting of Moretta codona proves.
The Kanderdelta is also a hotspot for rare waders. Eight confirmed sightings of Beccaccia di mare have been recorded in April and June. Other notable species include Piovanello maggiore, Avocetta, Fratino, and Occhione. Additional rarities such as Calandro, Strolaga maggiore, Canapino maggiore, Piviere dorato, Calandrella, Falaropo beccosottile, Svasso cornuto, Rondine rossiccia, Labbo, Stercorario maggiore, Gabbiano di Sabine, and Frullino have also been observed.
Dettagli
Accesso
The Kanderdelta is easily accessible by bus from Thun (stop: Einigen, Kanderbrück). A parking lot is also available a few hundred meters away (Press P on the map). The area can only be explored on foot via a narrow path. This trail is not marked on maps and leads along the strictly protected Kander (1), where the Corriere piccolo nests on the gravel banks, through floodplain forests, and past a still water body created by gravel extraction (Unteres Kandergrien), which is often visited by herons (2), to the delta (3).
Depending on the water level, the 30 to 40-meter-wide shoreline strip of the delta can be walked on. However, it’s obviously preferable not to disturb or approach any wading birds that might be present. On the other side of the Kandergrien, there is a meadow for lounging (4) with a good view of the lake, and a kiosk operates there during the warmer months.