Factors Contributing to Local and Regional Variation in Black Grouse Breeding Success in Northern Britain

1991 ◽  
Vol 22 (3) ◽  
pp. 264 ◽  
Author(s):  
David Baines
Keyword(s):  
Breeding Success ◽  
Regional Variation ◽  
Black Grouse

Juvenile sex ratio in relation to breeding success in Capercaillie Tetrao urogallus and Black Grouse T. tetrix

Ibis ◽  
2001 ◽  
Vol 143 (3) ◽  
pp. 627-631 ◽  
Author(s):  
BIRGER HÖRNFELDT ◽  
TIM HIPKISS ◽  
ULF EKLUND
Keyword(s):  
Sex Ratio ◽  
Breeding Success ◽  
Tetrao Urogallus ◽  
Black Grouse

Breeding Success of Black Grouse and Capercaillie in Relation to Mammalian Predator Densities on Two Spatial Scales

Oikos ◽  
1997 ◽  
Vol 79 (2) ◽  
pp. 301 ◽  
Author(s):  
Sami Kurki ◽  
Pekka Helle ◽  
Harto Lindén ◽  
Ari Nikula ◽  
Harto Linden
Keyword(s):  
Breeding Success ◽  
Spatial Scales ◽  
Black Grouse ◽  
Mammalian Predator

scholarly journals Climate change and bird reproduction: warmer springs benefit breeding success in boreal forest grouse

2017 ◽  
Vol 284 (1866) ◽  
pp. 20171528 ◽  
Author(s):  
Per Wegge ◽  
Jørund Rolstad
Keyword(s):  
Global Warming ◽  
Boreal Forest ◽  
Breeding Success ◽  
Brood Size ◽  
The Other ◽  
Black Grouse ◽  
Northern Latitudes ◽  
Declining Populations ◽  
Finnish Study ◽  
Mismatch Hypothesis

Global warming is predicted to adversely affect the reproduction of birds, especially in northern latitudes. A recent study in Finland inferred that declining populations of black grouse, Tetrao tetrix , could be attributed to advancement of the time of mating and chicks hatching too early—supporting the mismatch hypothesis. Here, we examine the breeding success of sympatric capercaillie, T. urogallus, and black grouse over a 38-year period in southeast Norway. Breeding season temperatures increased, being most pronounced in April. Although the onset of spring advanced nearly three weeks, the peak of mating advanced only 4–5 days. In contrast to the result of the Finnish study, breeding success increased markedly in both species (capercaillie: 62%, black grouse: 38%). Both brood frequency and brood size increased during the study period, but significantly so only for brood frequency in capercaillie. Whereas the frequency of capercaillie broods was positively affected by rising temperatures, especially during the pre-hatching period, this was not the case in black grouse. Brood size, on the other hand, increased with increasing post-hatching temperatures in both species. Contrary to the prediction that global warming will adversely affect reproduction in boreal forest grouse, our study shows that breeding success was enhanced in warmer springs.

Northern Goshawk (Accipiter gentilis) may improve Black Grouse breeding success

2015 ◽  
Vol 157 (1) ◽  
pp. 363-370 ◽  
Author(s):  
Risto Tornberg ◽  
Seppo Rytkönen ◽  
Panu Välimäki ◽  
Jari Valkama ◽  
Pekka Helle
Keyword(s):  
Breeding Success ◽  
Accipiter Gentilis ◽  
Black Grouse ◽  
Northern Goshawk

scholarly journals Erratum to: Northern Goshawk (Accipiter gentilis) may improve Black Grouse breeding success

2017 ◽  
Vol 158 (3) ◽  
pp. 895-895
Author(s):  
Risto Tornberg ◽  
Jaakko Junikka ◽  
Seppo Rytkönen ◽  
Panu Välimäki ◽  
Jari Valkama ◽  
...  
Keyword(s):  
Breeding Success ◽  
Accipiter Gentilis ◽  
Black Grouse ◽  
Northern Goshawk

Climate change and breeding success: decline of the capercaillie in Scotland

2001 ◽  
Vol 70 (1) ◽  
pp. 47-61 ◽  
Author(s):  
Robert Moss ◽  
James Oswald ◽  
David Baines
Keyword(s):  
Climate Change ◽  
Breeding Success
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