Cooperatively Breeding Groups of Carrion Crow (Corvus corone corone) in Northern Spain

The Auk ◽  
2002 ◽  
Vol 119 (3) ◽  
pp. 790-799 ◽  
Author(s):  
Vittorio Baglione ◽  
Daniela Canestrari
Keyword(s):  
Northern Spain ◽  
Carrion Crow ◽  
Cooperatively Breeding ◽  
Corvus Corone ◽  
Breeding Groups

COOPERATIVELY BREEDING GROUPS OF CARRION CROW(CORVUS CORONE CORONE) IN NORTHERN SPAIN

The Auk ◽  
2002 ◽  
Vol 119 (3) ◽  
pp. 790 ◽  
Author(s):  
Vittorio Baglione ◽  
José M. Marcos ◽  
Daniela Canestrari
Keyword(s):  
Northern Spain ◽  
Carrion Crow ◽  
Cooperatively Breeding ◽  
Corvus Corone ◽  
Breeding Groups

Cooperatively Breeding Groups of Carrion Crow(Corvus Corone Corone) in Northern Spain

The Auk ◽  
2002 ◽  
Vol 119 (3) ◽  
pp. 790-799 ◽  
Author(s):  
Vittorio Baglione ◽  
José M. Marcos ◽  
Daniela Canestrari
Keyword(s):  
Cooperative Breeding ◽  
Northern Spain ◽  
Juvenile Dispersal ◽  
Carrion Crow ◽  
Cooperatively Breeding ◽  
Corvus Corone ◽  
Group Members ◽  
Breeding Groups ◽  
Mode 3 ◽  
One Year

AbstractThe Carrion Crow (Corvus corone) is almost invariably reported as a species breeding as unassisted pairs, but a population of Carrion Crows (Corvus c. corone) from northern Spain that we have been studying since 1995 regularly exhibits cooperative breeding. The Spanish population thus demonstrates that cooperative breeding can vary greatly across populations. Most of the breeding territories (73.3%) in Spain were held by cohesive groups, which consisted of up to nine birds (mode = 3 birds). The proportion of fledglings that delayed dispersal for one year varied between 12.2 and 47.5% for different cohorts. The corresponding values for juveniles postponing dispersal for two years were 4.9 and 19.2%. Philopatry was skewed toward males. Some social groups contained immigrants. Therefore, delayed juvenile dispersal was not the only route towards sociality. Up to three helpers provided food to the nestling and at least one helper was found in all the groups surveyed. However, some group members refrained from visiting nests and thus the contribution to nestling care was highly variable among individuals.

scholarly journals Observation of female-male mounting in the carrion crow

2020 ◽  
Author(s):  
Claudia A.F. Wascher ◽  
Friederike Hillemann
Keyword(s):  
Male Partner ◽  
Carrion Crow ◽  
Quantitative Studies ◽  
Sexual Behaviours ◽  
Corvus Corone ◽  
Term Pair

AbstractWe report an observation of a female carrion crow, Corvus corone corone, mounting her long-term, pair-bonded, male partner. The report highlights the importance of more systematic quantitative studies of rare socio-sexual behaviours, which could provide important insights into the evolution of non-conceptive socio-sexual behaviours.

Ontogeny of object permanence and object tracking in the carrion crow, Corvus corone

2011 ◽  
Vol 82 (2) ◽  
pp. 359-367 ◽  
Author(s):  
Almut Hoffmann ◽  
Vanessa Rüttler ◽  
Andreas Nieder
Keyword(s):  
Object Tracking ◽  
Object Permanence ◽  
Carrion Crow ◽  
Corvus Corone

Carrion Crow Corvus Corone Breeding In Lubuskie Province, W Poland

2013 ◽  
Vol 37 (1) ◽  
pp. 25-27
Author(s):  
Piotr Zduniak ◽  
Paweł Czechowski
Keyword(s):  
National Park ◽  
Carrion Crow ◽  
First Case ◽  
Corvus Corone ◽  
Breeding Failure ◽  
Breeding Attempt

Abstract In 2013, a clutch of the Carrion Crow Corvus corone was recorded in the Warta Mouth National Park, western Poland. In April and the first half of May a female incubating two and later four eggs was observed. In mid-May the nest was found empty, indicating that the failure occurred during incubation or the early nestling stage. No male was observed until that time. However, two Carrion Crows were recorded near the nest after the breeding failure, which indicates that it was indeed a breeding attempt made by a homogamic (“pure”) Carrion Crow’s pair. This is the first case described for the Lubuskie Province and the second for Poland in the last 200 years.

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