Predation on artificial nests in relation to forest type: contrasting the use of quail and plasticine eggs

Bayne, Erin M.; Hobson, Keith A.; Fargey, Pat

doi:10.1111/j.1600-0587.1997.tb00366.x

Cited by 92 publications

(51 citation statements)

References 33 publications

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“…Squirrels on our study site forage preferentially and maintain middens in forest stands dominated by coniferous trees, followed by mixed stands and lastly by deciduous dominated tree clumps (K.E.H. Aitken unpublished data), similar to other published studies outside our study area (e.g., Bayne et al 1997). Although we did not quantify squirrel abundance, it is reasonable to assume that squirrel activity would be higher in coniferous stands compared to deciduous stands and that bird nests in the former would be exposed to increased predation risk (Bayne et al 1997).…”

Section: Nest and Site Characteristicssupporting

confidence: 70%

Nest site attributes and temporal patterns of northern flicker nest loss: effects of predation and competition

2005

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To date, most studies of nest site selection have failed to take into account more than one source of nest loss (or have combined all sources in one analysis) when examining nest site characteristics, leaving us with an incomplete understanding of the potential trade-offs that individuals may face when selecting a nest site. Our objectives were to determine whether northern flickers (Colaptes auratus) may experience a trade-off in nest site selection in response to mammalian nest predation and nest loss to a cavity nest competitor (European starling, Sturnus vulgaris). We also document within-season temporal patterns of these two sources of nest loss with the hypothesis that flickers may also be constrained in the timing of reproduction under both predatory and competitive influence. Mammalian predators frequently depredated flicker nests that were: lower to the ground, less concealed by vegetation around the cavity entrance and at the base of the nest tree, closer to coniferous forest edges and in forest clumps with a high percentage of conifer content. Proximity to coniferous edges or coniferous trees increased the probability of nest predation, but nests near conifers were less likely to be lost to starlings. Flickers may thus face a trade-off in nest site selection with respect to safety from predators or competitors. Models suggested that peaks of nest predation and nest loss to eviction occurred at the same time, although a competing model suggested that the peak of nest loss to starlings occurred 5 days earlier than the peak of mammalian predation. Differences in peaks of mammalian predation and loss to starlings may constrain any adjustment in clutch initiation date by flickers to avoid one source of nest loss.

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Section: Nest and Site Characteristicssupporting

confidence: 70%

Nest site attributes and temporal patterns of northern flicker nest loss: effects of predation and competition

2005

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“…There is a particular need to determine whether the effects of factors such as nest-site characteristics on the rate of predation are similar for artificial and natural nests (King et al 1999). In addition, the type of egg and/or materials used to construct artificial nests may affect both the overall rate of predation and the effects of particular nest-site characteristics on predation (Martin 1987;DeGraaf and Maier 1996;Bayne et al 1997;DeGraaf 2000, 2001).…”

Section: Introductionmentioning

confidence: 99%

Do predation rates on artificial nests accurately predict predation rates on natural nests? The effects of nest type, egg type and nest-site characteristics

Berry

Lill

2003

Emu - Austral Ornithology

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Abstract. We compared the predation rate on natural nests of the Eastern Yellow Robin, Eopsaltria australis, with the predation rates on four types of artificial nests in a woodland remnant in southern Victoria. The aims of this study were: to compare the overall rates of predation on artificial and natural nests; to determine whether artificial nests accurately reflect the effects of nest-site characteristics on the predation rate of natural nests; and to examine the effects of using different nest types and egg types for artificial nests. The predation rates on artificial nests were significantly greater than those on natural nests. The predation rate was significantly greater on artificially constructed nests than on real, disused Eastern Yellow Robin nests, but there was no difference in the predation rates on artificial nests containing plasticine or Canary, Serinus canarius, eggs. There were no effects of nest-site characteristics on the predation rates on either artificial or natural nests. These results showed that the method of construction of artificial nests can affect the rate of nest predation, and suggest that artificial nests should be made as realistic as possible in order to gain more accurate information on the predation rates on the natural nests they are meant to represent.

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“…The plasticine egg was removed or damaged from 15 (71%) of the 21 predated nests. Increased predation on plasticine eggs compared with quail eggs has been well documented in previous studies with one of the proposed explanations being that quail eggs may be too hard for some small mammals to penetrate the shell, but the same species may leave marks on plasticine eggs (Bayne et al 1997;Maier and Degraaf 2001;Alvarez and Galetti 2007). Indeed, from the nests that had plasticine eggs left with marks, we could identify that small mammals were responsible for the majority of the predation events (n=5), followed by birds (n=4).…”

Section: Introductionmentioning

confidence: 83%

“…Yet, the potential bias introduced by the experimental manipulation of nest sites that is commonly applied in nest predation studies for example the use of track-boards (DeGraaf and Angelstam 1993; Pedersen et al 2009) has rarely been assessed, with studies mainly focusing on comparisons between egg types (Bayne et al 1997;Maier and Degraaf 2001;Alvarez and Galetti 2007). Our objective was to evaluate differences in predation rates between experimental manipulations of artificial ground nests that are commonly applied in nest predation studies.…”

Section: Introductionmentioning

confidence: 99%

Artificial nest predation rates vary depending on visibility in the eastern Brazilian Amazon

Michalski

Norris

2014

Acta Amaz.

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Observational and experimental studies have shown that increased concealment of bird nests reduces nest predation rates. The objective of the present study was to evaluate differences in predation rates between two experimental manipulations of artificial ground nests (i.e., clearing an area around the artificial nest or leaving it as natural as possible), and test whether environmental variables also affected nest predation in an undisturbed area of Amazonian forest in eastern Brazil. A generalized linear model was used to examine the influence of five variables (manipulation type, perpendicular distance from the main trail, total basal area of trees surrounding the nest site, understorey density, and liana quantity) on nest predation rates. Model results, showed that manipulation type was the only variable that significantly affected nest predation rates. Thus, to avoid systematic biases, the influence of nest site manipulation must be taken into consideration when conducting experiments with artificial nests. KEYWORDS: Experimental manipulation, potential biases, quail egg. Taxas de predação em ninhos artificiais variam dependendo da visibilidade na Amazônia Oriental Brasileira RESUMOEstudos de observação e experimentais demonstraram que ninhos de aves menos visíveis apresentam taxas de predação reduzidas. O objetivo do presente estudo foi avaliar diferenças nas taxas de predação entre duas manipulações experimentais de ninhos artificiais no chão (i.e., limpando uma área em torno do ninho artificial ou deixando o mais natural possível), e testar se variáveis ambientais também poderiam afetar as taxas de predação em uma área intacta de floresta amazônica no leste do Brasil. Um modelo generalizado linear foi utilizado para examinar a influência de cinco variáveis (tipo de manipulação, distância perpendicular da trilha principal, área basal total das árvores em volta do local do ninho, densidade de sub-bosque, e quantidade de lianas) sobre as taxas de predação de ninhos. Os resultados do modelo demonstraram que tipo de manipulação foi a única variável que afetou significativamente as taxas de predação de ninhos. Assim, para evitar vieses sistemáticos, a influência da manipulação do local dos ninhos deve ser levada em consideração na realização de experimentos com ninhos artificiais. PALAVRAS-CHAVE: Manipulação experimental, potenciais vieses, ovo de codorna. Nest predation is not only the primary cause of reproductive failure in birds, but is also a major factor that can shape the evolution of avian life histories (Ricklefs 1969;Martin 2002), and drive bird species population dynamics (Clark and Martin 2007). Nest site selection and nest defense are strategies used by birds to reduce nest predation (Martin 1993;Götmark et al. 1995;Boulton et al. 2003). Indeed, according to the nest-concealment hypothesis, nests that are more concealed are less prone to be predated (Ricklefs 1969;Filliater et al. 1994;Weidinger 2002).Nest predation may be also determined by the community of potential predators (Weatherhea...

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Predation on artificial nests in relation to forest type: contrasting the use of quail and plasticine eggs

Cited by 92 publications

References 33 publications

Nest site attributes and temporal patterns of northern flicker nest loss: effects of predation and competition

Nest site attributes and temporal patterns of northern flicker nest loss: effects of predation and competition

Do predation rates on artificial nests accurately predict predation rates on natural nests? The effects of nest type, egg type and nest-site characteristics

Artificial nest predation rates vary depending on visibility in the eastern Brazilian Amazon

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