The role of partial incubation and egg repositioning within the clutch in hatching asynchrony and subsequent effects on breeding success

Ibis ◽  
2019 ◽  
Vol 162 (1) ◽  
pp. 63-74 ◽  
Author(s):  
David Diez‐Méndez ◽  
Samuel Rodríguez ◽  
Elena Álvarez ◽  
Emilio Barba
Keyword(s):  
Breeding Success ◽  
Hatching Asynchrony

The role of hatching asynchrony in brood size reduction of the great titParus majorin a Mediterranean pine forest

2008 ◽  
Vol 42 (5-8) ◽  
pp. 375-380 ◽  
Author(s):  
Timoleon Theofanellis ◽  
Eleni Galinou ◽  
Triantaphyllos Akriotis
Keyword(s):  
Brood Size ◽  
Pine Forest ◽  
Size Reduction ◽  
Hatching Asynchrony ◽  
Mediterranean Pine

Senescence in breeding success of female Alpine chamois (Rupicapra rupicapra): the role of female quality and age

Oecologia ◽  
2015 ◽  
Vol 178 (1) ◽  
pp. 187-195 ◽  
Author(s):  
Federico Tettamanti ◽  
Stefano Grignolio ◽  
Flurin Filli ◽  
Marco Apollonio ◽  
Pierre Bize
Keyword(s):  
Breeding Success ◽  
Rupicapra Rupicapra ◽  
Female Quality ◽  
Alpine Chamois

scholarly journals Does human hair attract or deter potential ground nest predators?

2020 ◽  
Vol 28 (2) ◽  
pp. 135-145
Author(s):  
Jenő J. Purger ◽  
Zsófia Szegleti ◽  
Dávid Szép
Keyword(s):  
Survival Rate ◽  
Breeding Success ◽  
Human Hair ◽  
Nest Building ◽  
Daily Survival Rate ◽  
Artificial Nests ◽  
Daily Survival ◽  
Reptile Species ◽  
Pass Through

AbstractThe nests of rare and threatened bird and reptile species that breed on the ground are often attempted to be protected from predators with fences, grids, and various repellent materials. Results of some experiments refer to the repellent function of human scent, whereas others suggest that it has an attractive role. We aimed to investigate how effectively ground nests can be protected from predators if human hair is placed around nests. We performed the experiment in a riverine oak-elm-ash forest using 90 artificial nests, each with 1 quail and 1 plasticine egg: 30 nests were protected with a game fence, 30 nests were surrounded with human hair and 30 nests were unprotected (control). During the 24 days, predators damaged 23% of the nests protected by a game fence, 40% of unprotected nests and 47% of the nests surrounded with hair. The daily survival rate of quail eggs in nests protected with a game fence was significantly higher than the ones in the nests surrounded with human hair. Only 18% of the quail eggs and 36% of plasticine eggs were damaged. Such difference can be explained by the fact that small-bodied birds and mammals could pass through the game fence and left traces on plasticine eggs but they were unable to crack the shell of quail eggs. Within the game fence, denser vegetation can provide better nesting conditions and result in greater breeding success. The repellent role of human hair has not been proved, on the contrary, in some cases we have observed signs of its attractant role, such as small-bodied birds took hair away for nest building.

The role of setts in badger (Meles meles) group size, breeding success and status of TB (Mycobacterium bovis)

2003 ◽  
Vol 260 (2) ◽  
pp. 209-215 ◽  
Author(s):  
L. M. Rogers ◽  
G. J. Forrester ◽  
G. J. Wilson ◽  
R. W. Yarnell ◽  
C. L. Cheeseman
Keyword(s):  
Group Size ◽  
Mycobacterium Bovis ◽  
Breeding Success ◽  
Meles Meles

scholarly journals Feral pigeons as a nest competitor for a small seabird

2021 ◽  
Author(s):  
Beneharo Rodríguez ◽  
Airam Rodríguez ◽  
Felipe Siverio ◽  
Juan Manuel Martínez ◽  
Enrique Sacramento ◽  
...  
Keyword(s):  
Breeding Success ◽  
Columba Livia ◽  
Pathogen Transmission ◽  
Nest Density ◽  
Nest Location ◽  
Nest Sites ◽  
Breeding Failure ◽  
Nesting Sites ◽  
Calonectris Borealis

Abstract Due to their life-history traits, the petrels are particularly sensitive to predation by introduced species. Therefore, many populations have constricted their original breeding distribution range, currently only occupying predator-free sites. In this scenario, interspecific competition for nesting sites can be detrimental for the petrel’ conservation. Here, we evaluate how the presence of introduced mammals (cats Felis catus and rats Rattus spp.) and potential competitors for nest sites (Cory’s shearwaters Calonectris borealis and feral rock pigeons Columba livia) shape the distribution, breeding density, and breeding performance of the Bulwer’s petrel Bulweria bulwerii on Tenerife, the largest and most densely populated of the Canary Islands. We estimated nest density, assessed the role of nest location and nest characteristics on breeding success, and determined causes of breeding failure by exotic predators and competitors. Nest density was higher in predator-free colonies on marine rocks. Cat presence was the best predictor for nest density, while presence or abundance of competitors had no correlation to nest density. Breeding success varied between years and colonies, but was not related to nest characteristics. Of the unequivocally determined causes of breeding failure, pigeon competition for nests was the most frequent (7.3%), followed by rat predation (6.3%). We also compared petrel and pigeon nest cavities and found a considerable overlap in nesting niche. Our study provides insight on an overlooked impact of the invasive rock pigeon: nest competition with small seabirds. We encourage more research on the effects of pigeons on nest density, disease and pathogen transmission, and vegetation changes within petrel colonies.

scholarly journals Chick Growth and Breeding Success of the Burrowing Parrot

The Condor ◽  
2002 ◽  
Vol 104 (3) ◽  
pp. 574-586 ◽  
Author(s):  
Juan F. Masello ◽  
Petra Quillfeldt
Keyword(s):  
Breeding Success ◽  
Growth Parameters ◽  
Large Mass ◽  
Hatching Asynchrony ◽  
Brood Reduction ◽  
Egg Mass ◽  
Chick Growth ◽  
Large Variability ◽  
Rio Negro ◽  
Nestling Period

Abstract We present the first data on the breeding biology of wild Burrowing Parrots (Cyanoliseus patagonus). We studied chick growth and breeding success at the largest colony of the species in the province of Río Negro, Patagonia, Argentina, during the 1999–2000 breeding season. A very high fledging success was observed and related to the absence of nest predation and the colonial breeding system. Safe nest sites were also thought to favor large mass recession of the nestlings before fledging. Mortality during the nestling period tended to be higher for fourth and fifth nestlings of a brood, indicating that brood reduction occurred. Burrowing Parrots in the study colony showed large variability in growth parameters between nestlings, possibly related to the hatching asynchrony observed. Allometric relationships for egg mass, clutch size, relative clutch mass, and nestling period of 29 wild psittaciform species are described and compared with the data from the Burrowing Parrots. Desarrollo de los Pichones y Éxito de Nidificación de Cyanoliseus patagonus Resumen. Presentamos aquí los primeros datos de la biología reproductiva en estado silvestre del loro Cyanoliseus patagonus. Se estudió el crecimiento de los pichones y el éxito de nidificación en la colonia más importante de la especie (provincia de Río Negro, Patagonia, Argentina) durante la temporada de cría 1999–2000. Se observó un alto éxito de emplumamiento de los pichones relacionado a la ausencia de depredación en el nido y al sistema colonial de nidificación que presenta la especie. Los sitios de nidificación seguros habrían favorecido la pronunciada pérdida de masa corporal observada en los pichones antes de abandonar el nido. La mortalidad durante el período de nidificación tendió a ser más alta para el cuarto y quinto pichón de la nidada, indicando la existencia de reducción de la camada. Los loros de la colonia estudiada mostraron gran variabilidad en los parámetros de desarrollo de los distintos pichones, estando ésto posiblemente relacionado con el nacimiento asincrónico de los pichones. Se describen también relaciones alométricas para la masa del huevo, el tamaño de la nidada, la masa relativa de la nidada y el período de permanencia en el nido de 29 psittaciformes silvestres y se comparan con los datos de C. patagonus.

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