Large-billed Crow (Corvus macrorhynchos)

2020 ◽  
Author(s):  
Steve Madge
Keyword(s):  
Corvus Macrorhynchos

scholarly journals Histological Properties of the Nasal Cavity and Olfactory Bulb of the Japanese Jungle Crow Corvus macrorhynchos

2009 ◽  
Vol 34 (7) ◽  
pp. 581-593 ◽  
Author(s):  
M. Yokosuka ◽  
A. Hagiwara ◽  
T. R. Saito ◽  
N. Tsukahara ◽  
M. Aoyama ◽  
...  
Keyword(s):  
Olfactory Bulb ◽  
Nasal Cavity ◽  
Jungle Crow ◽  
Corvus Macrorhynchos

Calls of the Jungle Crow (Corvus macrorhynchos s.l.) as a taxonomic character

2000 ◽  
Vol 141 (3) ◽  
pp. 275-284 ◽  
Author(s):  
Jochen Martens ◽  
Jörg Böhner ◽  
Kurt Hammerschmidt
Keyword(s):  
Taxonomic Character ◽  
Jungle Crow ◽  
Corvus Macrorhynchos

scholarly journals Different patterns of allopreening in the same‐sex and opposite‐sex interactions of juvenile large‐billed crows ( Corvus macrorhynchos )

Ethology ◽  
2019 ◽  
Vol 126 (2) ◽  
pp. 195-206 ◽  
Author(s):  
Eri Miyazawa ◽  
Akiko Seguchi ◽  
Nana Takahashi ◽  
Ayumi Motai ◽  
Ei‐Ichi Izawa
Keyword(s):  
Same Sex ◽  
Opposite Sex ◽  
Corvus Macrorhynchos

scholarly journals Factors affecting individual variation in nest-defense intensity in colonially breeding Black-tailed Gulls (Larus crassirostris)

2011 ◽  
Vol 89 (10) ◽  
pp. 938-944 ◽  
Author(s):  
Kentaro Kazama ◽  
Yasuaki Niizuma ◽  
Kentaro Q. Sakamoto ◽  
Yutaka Watanuki
Keyword(s):  
Individual Variation ◽  
Physiological State ◽  
Breeding Birds ◽  
Egg Laying ◽  
Nest Defense ◽  
Laying Date ◽  
Plasma Testosterone ◽  
Factors Affecting ◽  
Corvus Macrorhynchos ◽  
Males And Females

The physiological state of parent birds combined with the value of their clutch may affect the intensity of their nest defense. In colonially breeding birds, nest-defense intensity may also be affected by the behavior of neighbors. We investigated individual variation in the nest-defense intensity among colonial Black-tailed Gulls ( Larus crassirostris Vieillot, 1818) over 2 years. Only 30%–40% of males attacked a decoy of an egg predator (Large-billed Crow ( Corvus macrorhynchos Wagler, 1827)), and the other males and females rarely attacked. Males attacking the decoy had higher levels of plasma testosterone than males that did not attack. Each male’s, but not female’s, nest-defense intensity was consistent throughout the incubation period and also across years. The intensity was not related to egg-laying date, clutch size, or age of offspring. The intensity was likely to be higher when individuals had one or more neighbors, representing higher nest-defense intensity in the year where gulls had larger number of adjacent neighboring nests (5.23 nests), but this trend was not observed in the year where they had smaller number of the neighboring nests (3.73 nests). Thus, in addition to testosterone levels, behavior of neighbors also influences the nest-defense intensity.

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