Effects of intrinsic and time-specific factors on daily nest survival of birds in a semiarid area of South America (Caatinga)

França, Leonardo Fernandes; Silva, Camila Melo da; Paiva, Luciana

doi:10.1007/bf03544351

Cited by 9 publications

(2 citation statements)

References 45 publications

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“…Predation risk also extends to adult individuals during the incubation and nestling feeding periods, a fact that further increases breeding costs (Martin 2002, Arnold et al 2012). Intrinsic factors, such as the nest type (closed vs. open nests) can play key role in breeding success levels (França et al 2016). For example, tree-cavity nests can provide up to four times more security to birds' offspring against predators than open nests (Martin 1995).…”

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Breeding Success of Primary and Secondary Burrow-Nesting Birds on Stream Banks in Central Brazil

et al. 2023

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Underground burrow nests of three bird species: Amazonian Motmot Momotus momota, Rufous-tailed Jacamar Galbula ruficauda and Swallow Tanager Tersina viridis were monitored for eight years on stream banks, in a Seasonal Semideciduous Forest, to enable determining whether, or not, being a burrow excavator bird is associated with nest predation, and how important the role played by nest dimensions in this nesting system is. Predation was the main cause of nest failures, although there was no significant difference in nest predation between secondary (SCN) and primary (PCN) cavity (burrow)-nesting species. Offspring predation rate was the only one recording significant result; the lowest offspring predation rate was associated with PCN species — Amazonian Motmot but, again, there was no significant difference between PCN and SCN species. On the other hand, SCN species — Swallow Tanager has compensated offspring losses due to its increased fecundity, which enabled two broods per breeding season. No nest parameter has influenced predation rates, although our data suggested the need of further investigating the length of the nest access tunnel.

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Breeding Success of Primary and Secondary Burrow-Nesting Birds on Stream Banks in Central Brazil

et al. 2023

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“…Clutch size and predation risk of young birds (nestlings) are similar between dry and wet tropical environments (Lopes & Marini 2005, França & Marini 2009, Borges & Marini 2010, França et al . 2016, Paixão 2019). Therefore, if extrinsic adult mortality is low and mortality pressure is asymmetrically higher for young birds than for adults in seasonally dry tropical environments, a likely hypothesis might be that annual adult survival is regionally similar between the dry tropics and the more constantly wet counterparts.…”

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Similar survival of birds between wet and seasonally dry Neotropical environments

Silva

Paiva

Pichorim

et al. 2023

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Studies in the tropics suggest a regional similarity in survival rates of adult birds, however, this literature often overlooks species in semi‐arid tropical environments. Bird survival in seasonally dry environments (e.g. seasonally dry tropical forests – SDTF) may be lower than that in more constantly wet areas (e.g. tropical rainforests – TRF), especially if the birds are negatively affected by seasonal rainfall or food‐limitation. However, survival could be similar across these tropical environments, as the asymmetry between young and adult mortality tends to be high in all tropical areas, and the higher risk of mortality in young animals may favour adult survival (residual reproductive investment), regardless of the local climatic conditions. To fill this knowledge gap, we tested the hypothesis that bird survival is similar between seasonally dry (SDTF) and constantly wet (TRF) Neotropical environments. We estimated the apparent survival of 27 South American bird populations from three SDTF areas, and 39 populations from a TRF. Apparent survival was estimated from CJS models fitted using a Bayesian structure and the resulting variation in survival rates between study areas and with body mass was explored using a Bayesian phylogenetic mixed model. Apparent annual survival of passerines did not differ between areas (geometric mean of survival: SDTF = 0.50, 0.56, 0.64; TRF = 0.58), but body mass was positively associated with survival. The variation in bird survival was partially explained by phylogenetic relationships among species. Our results suggest that bird survival is regionally similar in Neotropical forests, despite the climatic variation. We discuss possible physiological and behavioural mechanisms adopted by birds in SDTF to attenuate effects of environmental seasonality on survival.

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The Avifauna of the Caatinga: Biogeography, Ecology, and Conservation

Araújo

Silva

2017

Caatinga

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Effects of intrinsic and time-specific factors on daily nest survival of birds in a semiarid area of South America (Caatinga)

Cited by 9 publications

References 45 publications

Breeding Success of Primary and Secondary Burrow-Nesting Birds on Stream Banks in Central Brazil

Breeding Success of Primary and Secondary Burrow-Nesting Birds on Stream Banks in Central Brazil

Similar survival of birds between wet and seasonally dry Neotropical environments

The Avifauna of the Caatinga: Biogeography, Ecology, and Conservation

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