scholarly journals Compensatory and additive helper effects in the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis)

2019 ◽  
Vol 9 (5) ◽  
pp. 2986-2995 ◽  
Author(s):  
Lotte A. van Boheemen ◽  
Martijn Hammers ◽  
Sjouke A. Kingma ◽  
David S. Richardson ◽  
Terry Burke ◽  
...  
Keyword(s):  
Cooperatively Breeding ◽  
Seychelles Warbler

scholarly journals Compensatory and additive helper effects in the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis)

2018 ◽  
Author(s):  
Lotte A. van Boheemen ◽  
Martijn Hammers ◽  
Sjouke A. Kingma ◽  
David S. Richardson ◽  
Terry Burke ◽  
...  
Keyword(s):  
Group Size ◽  
Food Availability ◽  
Dominant Male ◽  
List Type ◽  
Territory Quality ◽  
Trade Offs ◽  
Cooperatively Breeding ◽  
Helping Behaviour ◽  
Seychelles Warbler ◽  
The Impact

ABSTRACTIn cooperatively breeding species, helper aid may affect dominant breeders’ investment trade-offs between current and future reproduction. By compensating for the care provided by helpers, breeders can reduce the costs of reproduction and improve chances of survival. Also, helper care can be additive to that of dominants, resulting in higher success of the current brood.However, the influence of helpers on offspring care itself may be the by-product of group size and territory quality. Therefore to make conclusive inferences about causation of additive and compensatory care as a result of helpper serequires disentangling the impact of helping from other factors determining parental investment.In this study, we use 20 years of offspring provisioning data to investigate the effect of helping on breeder and overall offspring provisioning rates in the facultative cooperatively breeding Seychelles warbler (Acrocephalus sechellensis). Our extensive dataset allowed us to effectively control for the effects of living in a larger group and in territories with higher food availability.We show compensatory and additive care in response to helper aid. Helpers lightened the provisioning load of the dominant male and female and increased the total provisioning to the nestlings. This was irrespective of group size or territory quality (food availability).Our results illustrate how multiple benefits of helping behaviour can simultaneously be fundamental to the evolutionary maintenance of cooperative behaviour.

scholarly journals Subordinate females in the cooperatively breeding Seychelles warbler obtain direct benefits by joining unrelated groups

2018 ◽  
Vol 87 (5) ◽  
pp. 1251-1263 ◽  
Author(s):  
Frank Groenewoud ◽  
Sjouke A. Kingma ◽  
Martijn Hammers ◽  
Hannah L. Dugdale ◽  
Terry Burke ◽  
...  
Keyword(s):  
Direct Benefits ◽  
Cooperatively Breeding ◽  
Seychelles Warbler

scholarly journals Rescue behaviour in a social bird: removal of sticky ‘bird-catcher tree’ seeds by group members

Behaviour ◽  
2017 ◽  
Vol 154 (4) ◽  
pp. 403-411 ◽  
Author(s):  
Martijn Hammers ◽  
Lyanne Brouwer
Keyword(s):  
At Risk ◽  
Special Form ◽  
Experimental Studies ◽  
Cooperatively Breeding ◽  
Seychelles Warbler ◽  
Rescue Behaviour ◽  
Group Members ◽  
Tree Seeds ◽  
Pisonia Grandis

Rescue behaviour is a special form of cooperation in which a rescuer exhibits behaviours directed towards averting a threat to an endangered individual, thereby potentially putting itself at risk. Although rescue behaviour has been well-documented in experimental studies on rats and ants, published cases in other non-human animals are rare. Here, we report observations of rescue behaviour in the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis). In this species, individuals sometimes become entangled in seed clusters of ‘bird-catcher trees’ (Pisonia grandis). Just one or a few of these sticky seeds can prevent Seychelles warblers to fly and may lead to mortality. In four cases, individuals were observed displaying behaviour aimed at removing sticky seeds from the feathers of an entangled individual belonging to their group. Intriguingly, the rescuing individuals engaged in this behaviour despite potentially risking entanglement. To our knowledge, this is the first recorded case of rescue behaviour in birds.

Seychelles Warbler (Acrocephalus sechellensis)

2020 ◽  
Author(s):  
Andrzej Dyrcz ◽  
Chris Sharpe
Keyword(s):  
Seychelles Warbler

Population Ecology of the Cooperatively Breeding Acorn Woodpecker. (MPB-24), Volume 24

2020 ◽  
Author(s):  
WALTER D. KOENIG ◽  
RONALD L. MUMME
Keyword(s):  
Population Ecology ◽  
Cooperatively Breeding

Black-Tailed Prairie Dog Coteries: Are They Cooperatively Breeding Units?

1983 ◽  
Vol 121 (2) ◽  
pp. 266-274 ◽  
Author(s):  
Gail R. Michener ◽  
Jan O. Murie
Keyword(s):  
Prairie Dog ◽  
Cooperatively Breeding

scholarly journals Contrasting associations between nestling telomere length and pre and postnatal helpers’ presence in a cooperatively breeding bird

Oecologia ◽  
2021 ◽  
Author(s):  
Martin Quque ◽  
Matthieu Paquet ◽  
Sandrine Zahn ◽  
Frank Théron ◽  
Bruno Faivre ◽  
...  
Keyword(s):  
Telomere Length ◽  
Breeding Bird ◽  
Cooperatively Breeding

Female helpers signal their contribution to chick provisioning in a cooperatively breeding bird

2021 ◽  
Vol 172 ◽  
pp. 113-120
Author(s):  
Eva Trapote ◽  
Daniela Canestrari ◽  
Vittorio Baglione
Keyword(s):  
Breeding Bird ◽  
Cooperatively Breeding
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