Food Provisioning and Nestling Diet of the Black Stork in the Czech Republic

Hampl, Radek; Bureš, Stanislav; Baláž, Peter; Bobek, Miroslav; Pojer, František

doi:10.1675/1524-4695(2005)028[0035:fpando]2.0.co;2

Cited by 28 publications

(17 citation statements)

References 8 publications

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“…Despite this, nest visitation rates are highly variable between and among species, with some following a bimodal distribution (e.g. Knapton 1984;Conder 1989;Aguilera 1990;Hampl et al 2005), and others showing the peak of parental nest visits being in the middle of the day (Hoffman 1959;Rytkönen et al 1996) or a morning peak followed by a slow decline over the course of the day (Cowie and Hinsley 1988).…”

Section: Introductionmentioning

confidence: 99%

Daily patterns of nest visits are correlated with ambient temperature in the Northern Wheatear

et al. 2008

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The diurnal pattern of foraging behaviour in birds is commonly linked to the risk of starvation and predation. During the breeding season, when offspring place additional demands on the quantity of food adults need to collect, diurnal foraging patterns may be influenced to a greater extent by food availability because adults need to balance starvation-predation risks not only for themselves but also their offspring. We used data-loggers to measure diurnal variation in rates of nest visits to 7-to 10-day-old nestlings of the insectivorous Northern Wheatear Oenanthe oenanthe in Swedish farmland habitat. Adults provisioned the nestlings with food for an average 19.5 h each day (n = 11 pairs), with visitation rates sharply increasing during the morning, remaining relatively stable between 0800 and 1700 hours, and then declining in the evening. This pattern is similar to daily temperature fluctuations and is consistent with the hypothesis that nest visit rates are a function of temperature-dependent prey availability. Higher rates of nest visits on warm days support this correlation between temperature and offspring feeding. However, without data on the rate of self-feeding by adults it is difficult to distinguish between patterns of nest visits being driven by food availability, or starvation-predation constraints being imposed on the parents; thus, future studies of patterns of offspring feeding should collect data on the self-feeding behaviour of the adults.

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Section: Introductionmentioning

confidence: 99%

Daily patterns of nest visits are correlated with ambient temperature in the Northern Wheatear

et al. 2008

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“…Although one could expect a similar pattern in a closely related species, the breeding and foraging strategies of the two European storks are very different. Nests of the Black Stork are located in the forest and it forages mainly upon small fish and other small aquatic animals, which are collected in shallow water bodies and wetlands (Zawadzka et al 1990;Lõhmus and Sellis 2001;Hampl et al 2005;Strazds 2011). Comparatively, the White Stork nests are located in open places and it also forages in open landscapes, preferably in wet meadows, quite close to the nest (Cramp and Simmons 1977).…”

Section: Discussionmentioning

confidence: 99%

Spatio-temporal variation in nestling sex ratio among the Black Stork Ciconia nigra populations across Europe

et al. 2014

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Sex ratio is an indicator of population health as unexpected biases may indicate potential threats. We studied nestling sex ratio in Black Stork Ciconia nigra populations in order to check potential biases and differences along east-west and north-south gradient across its distribution range in Europe. We also studied variation between years, and checked potential correlations with weather variables. The overall sex ratio of nestlings in Europe was nearly equal with a non-significant deficiency (47.1 %) of males, the larger sex. Although yearly fluctuations in sex ratio were detected, no significant effect of the year alone was found, only simultaneously with population and brood size. There was a tendency to have a higher proportion of female nestlings in larger broods, but the pattern was probably scattered by the effect of reduction of largest broods. Compared to Western and Eastern Europe, a significant deficiency of male nestlings was found in Central Europe (Poland), whereas no differences were found along the north-south gradient. We did not find any effect of temperature, but rainfall during the incubation period was negatively correlated with the proportion of male nestlings in Central (Poland) and Western Europe (France) whereas in North-Eastern Europe (Latvia) the same effect of the precipitation in pre-breeding period was found.

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“…A food item was defined as the fraction of the bolus handled and finally swallowed by an individual chick. Data from video recordings allowed determining the composition of 40 feedings at 28 different nests (for the validity of this method see Hampl et al and Dolata ). Classification of prey types was based on information on nestling diet collected by the neck‐collar method during the 2002 breeding season.…”

Section: Methodsmentioning

confidence: 99%

“…A food item was defined as the fraction of the bolus handled and finally swallowed by an individual chick. Data from video recordings allowed determining the composition of 40 feedings at 28 different nests (for the validity of this method see Hampl et al 2005 nestling identification and video recording. This pilot study included recordings at 15 broods 1-6 weeks old but these were not included in the analysed sample.…”

Section: Methodsmentioning

confidence: 99%

Kind to kin: weak interference competition among white stork Ciconia ciconia broodmates

Romero

Redondo

2016

Journal of Avian Biology

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Altricial nestlings in structured families show a diverse array of behavioural mechanisms to compete for food, ranging from signalling scrambles to aggressive interference. Rates of filial infanticide are moderately high in white storks. It has been hypothesized that this unusual behaviour is an adaptive parental response to the absence of efficient mechanisms of brood reduction (aggression or direct physical interference) by nestlings. To test this latter assumption, we analyzed video recordings of 41 complete feeding episodes at 32 broods during the first half of the nestling period, when nestlings complete 90% of growth and chick mortality and size asymmetries are highest. Parents delivered food to all nestlings simultaneously by regurgitating on the nest floor. No direct (bill to bill) feeding was recorded. Senior nestlings were never observed to limit their junior nestlings from eating food, either by aggression or physical interference. Experimental feeding tests revealed that heavier nestlings handled prey items more efficiently and ate food at a higher speed. The high degree of tolerance shown by senior nestlings is unusual among birds with similar ecological and phylogenetic affinities, such as herons. Tolerance by seniors cannot be easily explained by absence of parental favouritism or proximate factors known to affect the occurrence of sibling aggression in other species (rate of food transfer, brood size, hatching asynchrony or length of nestling period).

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Food Provisioning and Nestling Diet of the Black Stork in the Czech Republic

Cited by 28 publications

References 8 publications

Daily patterns of nest visits are correlated with ambient temperature in the Northern Wheatear

Daily patterns of nest visits are correlated with ambient temperature in the Northern Wheatear

Spatio-temporal variation in nestling sex ratio among the Black Stork Ciconia nigra populations across Europe

Kind to kin: weak interference competition among white stork Ciconia ciconia broodmates

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