Grauschnäpper / Spotted flycatcher (Muscicapa striata)

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In a pinch barbed wire will do instead of a tree branch.
Systematik: Gattung Muscicapa; Familie Schnäpperverwandte (Muscicapidae)
Singvögel, Fliegenschnäpper, ■■
Perches on limbs in forest to swoop for insects and return to perch, specifically heard in woods near Staldenweiher.
Heard in woods near Staldenweiher, seen at Kaltbrunnerriet. Has streaks on crown and breast, rather than spots. Medium brown on head and back, light colored belly. 'Pincette-shaped beak'.
Gesang 'unauffaellig' - zirp x 2-3, mal steigender tWIT
Gesang:

Song a primitive, slow series of various buzzing and very high pitched sounds. No recurring phrases. [Link]
Rufe:

The discreet calls often goes unnoticed. Most calls high pitched with a buzzing, "electric" timbre. Alarm call a sharp, drawn "tzreeeee-check", with the second syllable abruptly clipping the sound. [Link]
Körperlich: Länge=14 cm, Flügelspanne=23-25 cm, Gewicht=14-20 g
Habitate: Siedlung

Gesang: High (6-8 KHz?) short sound repeated every half to 5 seconds.
Gesang Eigenschaften: Melody: einfach rhythmisch, langsam, Frequency: 6-8 KHz
Ruf: General: To me something between a one-note and an extremely simple melody, namely med-med chk-hi-med-med, with a very irregular speed, not at all like a metronome.
Call:

Most calls high pitched with a buzzing, "electric" timbre. [Link]
XC656714 - Spotted Flycatcher - Muscicapa striata - Sounds similar to what I know.

♫ XC656714 - Spotted Flycatcher - Muscicapa striata - Sounds similar to what I know. (Ruf)

Ruf Eigenschaften: Ruf Melodie: stereotypisch melodisch, langsam, Frequenz: 4-7 KHz,
Zuerst dokumentierte Beobachtung : 2020-06-03 in Hungerseeli.