Eurasian wryneck / Wendehals (Jynx torquilla)

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Classification: Genus Jynx; Family Woodpeckers (Picidae)
Invisible as soon as it lands in a tree - perfect bark camouflage.
Vocalization:

Normally silent when not breeding. Other sounds: a guttural "gru", and hissing sounds when threatened. [Link]
Song:

Reihe von 8-12 Pfeiftönen. Klingt fast etwas heiser., Jeder Ruf etwas absinkend. Die Tonhöhe kann innerhalb der Reihe etwas schwanken, etwas zunehmen und eindringlicher werden. Klangfarbe weich, obertönig. [Link]

Song (both sexes): an insisting, Merlin- or Lesser Spotted Woodpecker-like series of plaintive "kee kee kee kee kee ". First slightly ascending, then descending. [Link]
Physical details: length=16-17 cm, wingspan=25-27 cm, weight=30-45 g
Habitats: Agricultural

Song: Woodpecker-like series of up to 25 slightly rising calls.
Song attributes: Melody: non-musical, slow, Frequency: 1-6 KHz
First documented observation: 2021-05-10 in Gambarogno. Most recent observation: 2023-05-26 in Amden Hinder Hoechi.