Category: Phasianidae

Himalayan Quail (Ophrysia superciliosa)

[order] GALLIFORMES | [family] Phasianidae | [latin] Ophrysia superciliosa | [authority] Gray, 1846 | [UK] Himalayan Quail | [FR] | [DE] | [ES] | [NL] Himalaya Kwartel | [copyright picture] Birdlife Subspecies Genus Species subspecies Region Range Genus A single species from north-western India; possibly extinct. Physical charateristics Rather nondescript quail with red bill and […]

Territorial behaviour and population dynamics in red grouse Lagopus lagopus scoticus. II. Population models

Willow Ptarmigan (Lagopus lagopus) Science Article 1 abstract 1) Recent experiments on cyclic red grouse populations discovered that aggressiveness, induced by testosterone implants, depressed population density for more than a year after the implants were exhausted. 2) This confirms the observation, also made in previous studies of this territorial species, that aggressiveness can determine population […]

Willow ptarmigan chicks consume moss sporophyte capsules

Willow Ptarmigan (Lagopus lagopus) Science Article 5 abstract Willow Ptarmigan( Lagopus lagopus) chicks consumes sporophyt capsules, a moss, istichiumin clinatuma, at La Perouse Bay, near Churchill, Manitoba, Canada.S ix chicks(6 -16 days old) were examined over 3 yr, and crops of all chicks containemd moss capsules.In two chicks, capsules represented a substantial portion of the […]

Evidence of re-nesting after brood loss in Red Grouse Lagopus lagopus scoticus

Willow Ptarmigan (Lagopus lagopus) Science Article 9 abstract The Red Grouse Lagopus lagopus scoticus is a single-brooded species that can re-lay if a clutch is lost during the nesting period (Cramp & Simmons 1980). However, there is no reported evidence regarding second clutches being attempted after a brood of young chicks is lost. Indeed, there […]

The shape of red grouse cycles

Willow Ptarmigan (Lagopus lagopus) Science Article 7 abstract We examined 223 time-series of red grouse (Lagopus lagopus scoticus) numbers compiled from shooting bag-records from grouse moors located across England, Scotland and Wales for evidence of non-time-reversibility, asymmetry in cycle shape and non-linearity. We found 44% of time-series to be non-time-reversible. Over 80% of time-series spent […]

Local genetic structure in red grouse (Lagopus lagopus scoticus): evidence from microsatellite DNA markers

Willow Ptarmigan (Lagopus lagopus) Science Article 11 abstract Allelic variation at seven hypervariable tri- and tetranucleotide microsatellite loci was used to determine levels of population differentiation between 14 populations of red grouse (Lagopus lagopus scoticus) in northeast Scotland, UK. Despite the potential for long-distance dispersal in grouse, and a semicontinuous habitat, significant population divergence was […]