Relative importance of male and territory quality in pairing success of male rock ptarmigan ( Lagopus mutus )

1999 ◽  
Vol 45 (5) ◽  
pp. 355-359 ◽  
Author(s):  
Jonathan Bart ◽  
Susan L. Earnst
2007 ◽  
Vol 12 (1) ◽  
pp. 77-80 ◽  
Author(s):  
Mi Htay Htay Yu ◽  
Tsuyoshi YAMAGUCHI ◽  
Norio MIYANO ◽  
Hirofumi SHIMIZU ◽  
Atsuko MURAI ◽  
...  

2007 ◽  
Vol 56 (2) ◽  
pp. 93-114 ◽  
Author(s):  
Hiroshi Nakamura
Keyword(s):  

2004 ◽  
Vol 40 (4) ◽  
pp. 804-807 ◽  
Author(s):  
Mio Hagihara ◽  
Tsuyoshi Yamaguchi ◽  
Masanobu Kitahara ◽  
Katsuya Hirai ◽  
Koichi Murata
Keyword(s):  

2003 ◽  
Vol 12 (8) ◽  
pp. 2267-2274 ◽  
Author(s):  
A. Caizergues ◽  
A. Bernard‐Laurent ◽  
J.‐F. Brenot ◽  
L. Ellison ◽  
J. Y. Rasplus

1980 ◽  
Vol 58 (9) ◽  
pp. 1638-1642 ◽  
Author(s):  
John B. Theberge ◽  
James F. Bendell

Three successive cohorts of rock ptarmigan chicks were raised in the standard conditions of a controlled environment aviary at the University of Alaska to identify inherent differences in survival and behaviour. That such differences were occurring was suggested by analysis of 10 years of population data. Eggs and chicks less than 4 days old were collected adjacent to the Eagle Creek population study area, representing one cohort at the peak of the cyclic fluctuation in 1968, and one on each side of the peak. Survival to 8 weeks varied among years. Parallel differences occurred in survival of chicks in the wild. Differences also occurred among years in level of agonistic behaviour measured from day 1 to 8 weeks by means of mirror tests. The behavioural differences are also attributed to inherent differences between cohorts. The difference in agonistic behaviour between 1968 and 1969 was primarily due to the greater scores of chicks from adult (2 years or older) hens. In 1969, chicks from adult hens were significantly more agonistic than chicks from yearling hens.


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