The Clutch Size of the Black-winged Stilt Himantopus himantopus himantopus

Kitagawa, Tamaki

doi:10.3312/jyio.36.117

Cited by 3 publications

(5 citation statements)

References 2 publications

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“…It has been suggested that the clutches with 3 or more eggs in the nest were laid by 2 or 3 females. In monogamous pairs, the clutch size equaled 3.36 ± 0.05 (n = 362, lim 1-4) (Kitagawa, 2005). In the Sahara Desert, Eastern Algeria these birds mostly have four-egg clutches (Adamou et al, 2009) with the last egg smaller than the others.…”

Section: Discussionmentioning

confidence: 96%

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Breeding of black-winged stilt Himantopus himantopus in muddy sites of a wastewater treatment plant

Mamedova

Чаплыгина

2021

Biosys. divers.

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A stable group of birds has been formed at water treatment facilities. Sewage treatment sites are a well-known nesting place for long-legged waders. Black-winged stilts are included in the Bonn (Appendix II) and Berne (Appendix II) conventions, the AEWA agreement. Listed in the Red Book of Ukraine (1994, 2009) (status – vulnerable). In Ukraine, it is under protection on the territory of the natural reserve fund. The arrival of black-winged stilts waders at the nesting sites was recorded in the second-third decade of April (April 23, 2020; April 17, 2021). Immediately after returning to the nesting areas, the birds begin to build nests and lay eggs. The first eggs in this population were seen on 01.05.2020, 07.05.2021. The process of laying eggs lasted until the end of the first decade of July (08.07.2020). The average clutch size in the nests of Himantopus himantopus decreased from 3.8 ± 0.1 (2020) to 3.5 ± 0.1 (2021). The average egg sizes and their limits have been determined for long-legged waders. The chicks hatched from late May (30.05.2020), throughout June to the first decade of July (02.07.2020). The chicks were able to fly in a month – 29.06.2020. The muddy site of the wastewater treatment ponds of Kharkiv supported Black-winged Stilts until early August. Later, the birds started post-breeding movements. The last adults with juvenile birds were observed on 13.08.2020. Stilts in some years may stay until early October. The reproductive success of the black-winged stilt increased from 35.6% (2020) to 38.8% (2021). On average, 1.3 ± 0.2 (2020) and 1.4 ± 0.3 (2021) chicks fledged from the nests. In 2021, the number of nesting stilts increased, which is apparently due to rainy weather at the beginning of the reproductive period. For the purpose of more effective protection, the nesting settlements of the stilt should be protected and the appearance of people in the nesting places should be prohibited.

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Section: Discussionmentioning

confidence: 96%

“…"Double clutches" were common, i.e. laid by several females in the same nest (Kitagawa, 2005;Diallo et al, 2019). In the northern part of the Azov Sea region, the average clutch size of the black-winged stilt was 3.75 ± 0.13 (n = 13), with CV = 12.0 % (lim 3-4) (Koshelev, 2020).…”

Section: Discussionmentioning

confidence: 99%

Breeding of black-winged stilt Himantopus himantopus in muddy sites of a wastewater treatment plant

Mamedova

Чаплыгина

2021

Biosys. divers.

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“…Nests were constructed on open wetlands along the water side, upon open shallow water surfaces, in short vegetation or bare land on small low islets within ponds, and on slightly raised mounds in shallow water. The average clutch size was 3.36 eggs (Kitagawa 2005). The first chick hatched 26ῌ27 days after the first egg was laid, and the remaining eggs hatched until the next day.…”

Section: The Annual Life Of the Black-winged Stiltmentioning

confidence: 98%

“…These were regarded as extraordinary breeding activities in this population, because 95.3% of breeding groups observed there comprised monogamous pairs (Kitagawa 2005). However, these six cases are interesting material to consider how bigamous breeding and cooperative breeding may have developed from monogamous breeding.…”

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confidence: 99%

Bigamous Trios in the Black-winged Stilt Himantopus himantopus himantopus: I. Pathways to form Bigamous Trios

珠樹¹

2009

J Yamashina Inst Ornithol

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Abstract. Six cases of bigamous trios in the Black-winged Stilt Himantopus himantopus himantopus were studied during 1997῍2006. One cause for the occurrence of bigamous trios is that postbreeding groups composed of a parent and a female o#spring of the previous year, or that of a family and an unrelated female, have not dissolved by the next breeding season. Under conditions of a female-biased sex ratio in the non-breeding season, some females may chose bigamous trios as one of three mating options. In one trio, one female left the trio just before egg-laying, after they began to defend the nesting territory. Two bigamous trios made a joint nest, respectively. One bigamous trio made two simultaneous nests. One bigamous trio made a joint nest in one year and two simultaneous nests the following year. One bigamous trio made three nests successively.

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“…The average clutch size was 3.36ῌ0.05SD (Kitagawa 2005). Males and females took turns in incubating eggs.…”

Section: Reproductive Output Of Monogamous Pairsmentioning

confidence: 98%

Bigamous Trios in the Black-winged Stilt Himantopus himantopus himantopus: II. Contribution of Members of Trios toward Incubation and Chick-caring

Kitagawa¹

2011

J Yamashina Inst Ornithol

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Abstract. The contribution of each member toward incubation and chick-caring was examined within six bigamous trios of the Black-winged Stilt Himantopus himantopus; three trios with joint-nests, two trios with two-simultaneous-nests, and one trio with three-successive-nests. The study extended over a ten-year period from 1997῍2007. In the first joint-nesting trio, composed of two parents and a yearling daughter, only the parents incubated the eggs. In the second joint-nesting trio, composed of three adult birds, all members attended one nest, but the dominant female sometimes drove the subordinate female out of the nest when the latter was incubating. In the third joint-nesting trio, composed of two parents and a yearling daughter, all members participated in incubation cooperatively. In bigamous trios with two-simultaneous-nests, one was composed of two parents and a yearling daughter, and the other composed of a male and two females. All members of these two trios participated in incubation of eggs in both nests. In the bigamous trio with three-successive-nests, composed of a pair and an unrelated female, the male attended all three nests, the dominant female attended the first and third nests, and the subordinate female attended the second and third nests. In a joint-nest situation, it seems to be di$cult physically for an individual to incubate all eggs of two clutches laid in a single nest. In two-simultaneous-nests and three-successive-nests, the males performed a greater proportion of incubation in the nests of dominant females than in those of the subordinates. In the Black-winged Stilt, the hatching success of bigamous trios did not di#er significantly from that of monogamous pairs. One bigamous trio with a joint-nest, one trio with two-simultaneous-nests, and one trio with three-successive-nests were successful in hatching chicks. In the first two cases all members of the respective trios contributed to defending chick-caring territory. In the trio with two-simultaneous-nests, all members participated in brooding, guarding chicks and sentry activities. Bigamous trios are more successful than monogamous pairs in chick-caring activities.

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The Clutch Size of the Black-winged Stilt Himantopus himantopus himantopus

Cited by 3 publications

References 2 publications

Breeding of black-winged stilt Himantopus himantopus in muddy sites of a wastewater treatment plant

Breeding of black-winged stilt Himantopus himantopus in muddy sites of a wastewater treatment plant

Bigamous Trios in the Black-winged Stilt Himantopus himantopus himantopus: I. Pathways to form Bigamous Trios

Bigamous Trios in the Black-winged Stilt Himantopus himantopus himantopus: II. Contribution of Members of Trios toward Incubation and Chick-caring

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