Nocturnality in Colonial Waterbirds: Occurrence, Special Adaptations, and Suspected Benefits

McNeil, Raymond; Drapeau, Pierre; Pierotti, Raymond

doi:10.1007/978-1-4615-9582-3_4

Cited by 75 publications

(78 citation statements)

References 177 publications

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“…Although nocturnal foraging might be less profitable than diurnal foraging (McNeil et al 1993), parents might need to continue foraging during night during highly energetically demanding periods.…”

Section: Effect Of Phase and Trip Type On Foraging Effortmentioning

confidence: 99%

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A new algorithm for the identification of dives reveals the foraging ecology of a shallow-diving seabird using accelerometer data

et al. 2017

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Island (35°51′33″N; 12°51′34″E) from 12 June to 8 September 2015 by deploying accelerometer data loggers on 60 Scopoli's shearwaters. Four birds were also equipped with TDRs. TDRs recorded only 17.7% of the dives detected by the accelerometers using the algorithm. A total of 82.3% of dives identified by algorithm were too short or shallow to be detected by TDRs. Therefore, TDRs were not accurate enough to detect most of the dives in Scopoli's shearwaters, which foraged mostly close to the sea surface. Our data showed that birds performed shorter foraging trips and dived more frequently in the early chick-rearing period compared with the late chick-rearing and incubation phases. Furthermore, parents dived more frequently during short foraging trips. Our results suggest that Scopoli's shearwaters maximised their foraging effort (e.g. number of dives, short trips) during shorter foraging trips and during early chick-rearing.

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Section: Effect Of Phase and Trip Type On Foraging Effortmentioning

confidence: 99%

“…Shearwater foraging activity occurs mostly during daytime (Shaffer et al 2009). Indeed, diurnal foraging might be more profitable than nocturnal for visual predators (McNeil et al 1993). However, Scopoli's shearwater also forages at night (Rubolini et al 2015).…”

mentioning

confidence: 99%

A new algorithm for the identification of dives reveals the foraging ecology of a shallow-diving seabird using accelerometer data

et al. 2017

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“…Nocturnal activities have not been examined quantitatively for most species (McNeil et al 1993). Nocturnality, including foraging, has been reported anecdotally for Wood Storks (Mycteria americana) (Bent 1926, Coulter et al 1987, Kahl 1964.…”

Section: Short Communicationsmentioning

confidence: 99%

Effect of Investigator Disturbance on Nest Attendance and Egg Predation in Eurasian Oystercatchers

Verboven¹,

Ens²,

Dechesne³

2001

Auk

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ABSTRACT.-Measures of repeatability have long been used to assess patterns of variation in egg size within and among females. We compared different analytical approaches for estimating repeatability of egg size of Black Brant. Separate estimates of repeatability for eggs of each clutch size and laying sequence number varied from 0.49 to 0.64. We suggest that using the averaging egg size within clutches results in underestimation of variation within females and thereby overestimates repeatability. We recommend a nested design that partitions egg-size variation within clutches, among clutches within females, and among females. We demonstrate little variation in estimates of repeatability resulting from a nested model controlling for egg laying sequence and a nested model in which we assumed laying sequence was unknown.Egg size represents the unit of investment in a reproductive attempt for birds. Accordingly, researchers have long been interested in variation in egg size and its adaptive significance. Repeatability is a measure of the proportion of variation in a trait that is due to differences among individuals. Therefore, estimates of repeatability of egg size split the total phenotypic variation in egg size into within-individual and among-individual components. Falconer (1989) describes that partitioning of the phenotypic variance in terms of the origin of the different variance components. Variation in egg size among individuals is caused by a combination of genetic and environmental differences. Variation in egg size within an individual among years is caused by temporary environmental differences between reproductive attempts. Falconer (1989) goes on to demonstrate that estimates of repeatability are useful in the context of quantitative genetics because they set upper limits to levels of heritable variation.Falconer (1989) states that estimates of repeatability can be based on measures of a characteristic that are 4 E-mail: paulflint@usgs.gov repeated in either time or space. Following Falconer's (1989) descriptions, egg size is repeated in both time and space-where time refers to different nesting attempts and space refers to eggs within a specific nesting attempt (i.e. clutch). In many cases researchers estimating repeatability of egg size use the average egg size within clutches (e.g. Lessells et al. 1989, Flint and Sedinger 1992, Flint and Grand 1996. However, that approach ignores some of the phenotypic variation in egg size within individuals (e.g. within clutches) and may have been used because researchers were uncertain how to deal with multiple measurements within clutches statistically. Other researchers have used a nested design to partition variance among females, within females among years, and within females within years (i.e. clutches) (LeBlanc 1987, Erikstad et al. 1998, Flint and Grand 1999.In this paper, we compare those two approaches in terms of estimates of repeatability. We decompose each estimate into its variance components and discuss each estimate in the context of quanti...

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“…The white stork belongs to the obligate diurnal feeders and has potentially inferior nocturnal visual capabilities, as was demonstrated for other wading species, e.g., the White Ibis Eudocimus ruber (Rojas et al 1997). For this reason, nocturnal foraging may also pose a serious threat to birds, as they may not be able to detect and escape predators (McNeil et al 1993). In spite of this, nocturnal feeding has occasionally been recorded in wading birds which feed primarily during daytime (Whitting and Guinea 1999;Bryan et al 2001;Kannan and Manakadan 2007), especially when they fail to meet their food requirements during the day (McNeil et al 1993).…”

Section: Discussionmentioning

confidence: 99%

“…For this reason, nocturnal foraging may also pose a serious threat to birds, as they may not be able to detect and escape predators (McNeil et al 1993). In spite of this, nocturnal feeding has occasionally been recorded in wading birds which feed primarily during daytime (Whitting and Guinea 1999;Bryan et al 2001;Kannan and Manakadan 2007), especially when they fail to meet their food requirements during the day (McNeil et al 1993). Data from nest cameras also confirmed occasional nocturnal foraging in the white stork (Dolata 2006).…”

Section: Discussionmentioning

confidence: 99%

Shortening day length as a previously unrecognized selective pressure for early breeding in a bird with long parental care

Podlaszczuk¹,

Wojciechowski

Podlaszczuk

et al. 2014

J Ornithol

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Several different selective pressures have been suggested to explain an intense competition for early return to breeding grounds in birds. In this study we hypothesized that shortening day length during summer months may constitute additional selective force acting towards early breeding in avian species with long parental care. To test this hypothesis, we studied time budget and foraging activities of early-nesting and late-nesting white storks Ciconia ciconia from the Central-European population. We found that duration and distance of foraging trips increased significantly over the course of the reproductive season. The relative frequency of foraging trips increased at the expense of other activities, such as resting, plumage maintenance, and nest maintenance. Mean daily foraging duration increased with increasing day length in the early part of the season, with 0.68 h of foraging per individual per 13.16 h of day length in mid-April increasing to 7.42 h of foraging per individual during solstice (16.61 h of day length). Afterwards, mean foraging duration continued increasing in spite of decreasing day length, reaching 11.63 h of foraging per individual per 14.92 h of day length at the end of the season in mid-August, when storks were forced to continue foraging after sunset in order to meet energy requirements of fledglings. The results suggest that shortening day length during summer months may constitute a serious time constraint on food delivery rates to offspring for late-breeding pairs of white stork.Keywords Ciconia ciconia Á Foraging Á Photoperiod Á Timing of breeding Á White stork Zusammenfassung Kü rzere Tage sind ein bisher unbekannter Selektionsdruck fü r frü hen Brutbeginn in einer Vogelart mit langer elterlicher Fü rsorge Verschiedene Selektionsfaktoren wurden bisher herangezogen zu erklären, warum Vögel so intensiv konkurrieren möglichst früh im Brutgebiet anzukommen. In dieser Studie untersuchten wir die Hypothese, dass kürzere Tage während der Sommermonate in Arten mit langer Elternfürsorge einen weiteren Selektionsfaktor darstellen, der frühen Brutbeginn begünstigt. Um diese Hypothese zu testen verglichen wir die Zeiteinteilung und Dauer der Nahrungssuche bei früh und spät nistenden Weißstörchen Ciconia ciconia in einer zentraleuropäischen Population. Die Dauer und Entfernung von Nahrungsflügen nahm im Laufe der Brutsaison signifikant zu. Die relative Häufigkeit von Nahrungsflügen stieg ebenfalls an, was auf Kosten anderer Aktivitäten wie Rast, Gefiederpflege und Nestpflege geschah.

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Nocturnality in Colonial Waterbirds: Occurrence, Special Adaptations, and Suspected Benefits

Cited by 75 publications

References 177 publications

A new algorithm for the identification of dives reveals the foraging ecology of a shallow-diving seabird using accelerometer data

A new algorithm for the identification of dives reveals the foraging ecology of a shallow-diving seabird using accelerometer data

Effect of Investigator Disturbance on Nest Attendance and Egg Predation in Eurasian Oystercatchers

Shortening day length as a previously unrecognized selective pressure for early breeding in a bird with long parental care

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