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Su carácter poco reservado facilita notablemente su observación en cualquier biotopo de los presentes en Urkiola; quizá sea en el encinar cantábrico donde más dificultades se den para verlo, por lo cerrado del mismo. Sin embargo, sus relinchos se pueden oir entre las encinas con frecuencia.
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The woodpeckers that have a higher representation in the forest areas of Urkiola, is on the one hand, the Green Woodpecker, Picus viridis. With the scarcity difference that presents the Great Spotted Woodpecker, Dendrocopos major, the other woodpecker resident in the Park, this bird is distributed throughout the totality of the Park; inclusively he has been spotted living in the beech trees that with difficulty climb up the rocky areas. Its unreserved character makes it easier to spot him in any ecological niche present in Urkiola; perhaps it is in the Cantabic grove of Holm oaks where it is more difficult to spot him due to the closeness of the vegetation. Nevertheless its characteristic sounds can frequently be heard in between the Holm oaks. It is a bird of an important size - measures around 30 cm - of attractive plumage. Its back is of an olive green colour, and its chest is yellow. The regimes and rectrices (tail feathers) are dark, white spotted, and chest feathers are greenish grey. Both male and female have a red crest and very bright yellow eyes. Even though they insect larvae, rotten wood termite (as is the case for all woodpeckers), the fundamental part of its diet is obtained by eating ants, they do so by trapping them with their sticky tongue. For this they come down to ground frequently; therefore the most frequent way to observe them is when they take off in flight from the ground, when in the presence of any observer.
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Urkiolako basoetan hedatuen dagoen okila, okil berdea da (Picus viridis). Bertan bizi den okil handia (Dendrocopos major) ez bezala, parkeko ia leku guztietan azaltzen da, baita harkaitzetan gora nekez igoten diren pagoetan ere. Espezie hau ez da bat ere ss eta, horregatik, Urkiolako edozein biotopotan antzeman daiteke; hala ere, Kantauri-izaerako artadian zailago da ikusten, baso-mota hori itxia delako. Dena dela, arteetatik sarri entzuten zaizkio kantuak edo irrintziak. Ez da hegazti txikia (30 cm ingurukoa) eta oso luma ikusgarriak ditu. Bizkarraldea oliba-berdea du eta ipurtxuntxurra horia. Arraun-luma eta lema-luma (buztanekoak biak) ilunak dira, puntu zuriekin; paparraldekoak, berriz, gris berdeskak. Bai arrek bai emeek gorria dute kaskoa; begiak horiak dituzte, oso deigarriak. Usteldutako zuran dauden intsektu xilofagoen harrak jaten badituzte ere (okil guztiek bezala), gehien jaten dutena inurriak dira eta, horretarako, mihi lingirdatsua dute. Inurriak harrapatzeko sarri jaisten da lurrera eta, noredonor edo zeredozer hurbiltzen zaionean ikaratu eta hegan egiten du ihes orduan da hegazti hau ikusteko aukerarik onena.
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