ML584804171
Greater Sage-Grouse x Sharp-tailed Grouse (hybrid) Centrocercus urophasianus x Tympanuchus phasianellus
Laguntzailea
Data
Kokapena
- Adina
- Zehaztu gabea
- Sexua
- Zehaztu gabea
- Grabaketa
- Erreklamorik gabe
Iruzkina
hand-held digiscope at ~1.3 km distance - displaying
Behaketaren xehetasunak
At the edge of a STGR lek, being actively pushed out/chased by STGR. Obviously larger in the dawn gloom, with a dark belly when it turned toward me - first thought was a Sage-Grouse but something looked a bit off. I waited until the sun rose and came out from behind some clouds, at which point I could see details quite well at 60x through the scope. Have some poor digiscopes to add. Size - noticeably larger than STGR when side-by-side, but not as large as I would expect for a GRSG, this was the first thing that bothered me about it. Plumage - head pattern like GRSG, with dark throat, white upper chest, yellow fringe above/in front of eye, filaments on neck ruff when displaying. Chest 'sash' and neck ruff dark brown instead of white, chest sacs not fully developed(?) - not really visible when displaying like typical GRSG but definitely present. Underside pattern typical GRSG with pale flanks and dark belly. Back grayish, seemed like typical GRSG. Tail fan somewhat pointed like STGR, but with definite points like GRSG, and white tips on tail feathers like STGR. Undertail coverts dark with white tips like GRSG. Behaviour - mostly standing around, occasionally displaying - sort of an intermediate display between the two species with some puffing of the chest and wing flaps followed by it bending forward and running around like a STGR (wings folded in though, not spread). Display sounds intermediate between a STGR 'gooo' call and a GRSG display sound - sort of weird, maybe a result of the underdeveloped chest sacs. STGR didn't seem to like it and were quite aggressive toward it - occasionally they would face off displaying at one another. Overall, a weird-looking bird that was about 80% GRSG plumage-wise but intermediate in size, sound and behaviour.
Informazio teknikoa
- Kamera
- Samsung Galaxy S7
- Mikrofonoa
- Osagarriak
- Kowa TSN-773
- Fitxategiaren tamaina originala
- 11.44 MB