Assessing Growth and Age of Whiskered Tern<i>Chlidonias hybrida</i>Chicks using Biometrics

Paillisson, Jean‐Marc; Latraube, Franck; Reeber, Sébastien

doi:10.5253/078.096.0212

Cited by 16 publications

(15 citation statements)

References 18 publications

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“…Distances between particular nests were moderately high (mean nearest neighbour distance 6.19 + 1.44 m) and there was a considerable between-brood variation in hatching date, which enabled assignment of all chicks to their natal nests without application of nest enclosures. On the day of ringing, age of each chick was estimated on the basis of growth curves given by Paillisson et al (2008), which also allowed calculations of exact hatching dates. Because hatching of Whiskered Tern chicks within a brood is synchronous (Paillisson et al 2008), we did not determine hatching positions.…”

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confidence: 99%

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Nest location affects chick growth rates in Whiskered TernsChlidonias hybrida

Minias

Lesner²,

Janiszewski

2012

Bird Study

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“…On the day of ringing, age of each chick was estimated on the basis of growth curves given by Paillisson et al (2008), which also allowed calculations of exact hatching dates. Because hatching of Whiskered Tern chicks within a brood is synchronous (Paillisson et al 2008), we did not determine hatching positions. In total, 140 chicks from 59 broods were marked.…”

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confidence: 99%

Nest location affects chick growth rates in Whiskered TernsChlidonias hybrida

Minias

Lesner²,

Janiszewski

2012

Bird Study

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“…was 2.35 ± 0.31 (SD, n=369), being similar those obtained in other studies, such as in Portugal, that showed averages of 2.91 (n =45) in 1993 and 2.95 (n = 39) in 1994 (Catry et al, 1997), and in Croatia 2.64 ± 0.77 (SD, n = 253) in 1993 (Muzinić & Delić, 1997). In other studies in France annual average clutch size was 2.71 ± 0.49 (SD, n = 211) in 2004; 2.05 ± 0.78 (SD, n = 406) in 2005 (Paillisson et al, 2006) and 2.35 ± 0.05 (SE, n = 207) in 2006 (Paillisson et al, 2008).…”

Section: Discussionmentioning

confidence: 64%

“…Nestlings leave nest temporarily when they are 3-10 days old and seek refuges away from it, moving further if disturbed (Cramp, 1985, Muzinić & Delić, 1997, and often return to it afterwards (Paillisson et al, 2008).…”

Section: Data Collectionmentioning

confidence: 99%

Peer Review #2 of "Reproductive success of Whiskered Tern Chlidonias hybrida in eastern Spain in relation to water level variation (v0.1)"

Ledwon¹

2018

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Background. A study on the Whiskered Tern Chlidonias hybrida was carried out between 2002 and 2009 in wetlands of eastern Spain to evaluate how water level fluctuation affects its reproductive success (hatching, fledgling and breeding success). This species is catalogued as Vulnerable in Spain and has an unfavorable conservation status in Europe. Methods. Our study includes 18 sampling areas from 5 wetlands, covering a total of 663 nests, 1,618 eggs, 777 nestlings and 225 fledglings. The colonies were visited at least twice per week in breeding period. The number of eggs and/or nestlings present in each nest were annotated each time the colonies were visited with the aim to compare the evolution of these parameters with time. Hatching success was calculated as the proportion of egg that hatched successfully. Fledgling success and breeding success were calculated as the proportion of chicks that fledged successfully and the proportion of eggs that produced fledglings. We used Kruskal-Wallis test to analyze the differences in the dependent variables hatching, fledgling and breeding success among the wetlands and the sampling areas. We explored the relationship between the different reproductive success with the average fluctuation rate and the anchoring depth of nests, using statistics of the linear regression. Results. It was observed that the reproductive success varied significantly in the interaction among the different categories of water level fluctuation and the different areas (using Kruskal-Wallis test). Our records showed that pronounced variations in water level destroyed several nests, which affected the Whiskered Tern reproductive success. Considering all events that occurred in 18 areas, the mean (± SD) of nests, eggs and nestlings that were lost after water level fluctuations were of 25.60 ± 21.79 %, 32.06 ± 27.58 % and 31.91 ± 21.28 % respectively, including also the effects of rain and predation. Discussion. Unfavorable climatic events, such as strong wind, rain or hail, also caused the lost of nests, eggs and nestlings, even when wetland water levels remained constant. The influence of the anchorage depth of the nest and the water level fluctuation rate were analyzed and did not provide statistically significant results. It was not possible to establish a clear pattern on these latter variables, so further studies are needed to obtain more significant results. We propose to undertake similar studies in wetlands where water level can be regulated, with the range of nest anchorage depth on the emergent vegetation being between 30-60 cm, what could improve the reproductive success in this kind of habitats. As recommendation, in water level controlled wetlands (that use sluices), it should not vary more than ± 6 cm in a short time (1-2 days) once the nests are established since it negatively affects their reproductive success.

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“…Enclosures used for fencing gull and tern chicks (Dunn 1979;Shealer and Haverland 2000;Gilbert and Servello 2005;Paillisson et al 2008) provide opportunities to capture parent birds. To our knowledge, only anecdotal information about trapping adults with previously installed enclosures has been published (Dunn 1979).…”

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An Effective Method for Trapping Both Parents and Chicks of Whiskered Terns (Chlidonias hybrida) and Its Impact on Breeding Success

2015

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Assessing Growth and Age of Whiskered TernChlidonias hybridaChicks using Biometrics

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 16 publications

References 18 publications

Nest location affects chick growth rates in Whiskered TernsChlidonias hybrida

Nest location affects chick growth rates in Whiskered TernsChlidonias hybrida

Peer Review #2 of "Reproductive success of Whiskered Tern Chlidonias hybrida in eastern Spain in relation to water level variation (v0.1)"

An Effective Method for Trapping Both Parents and Chicks of Whiskered Terns (Chlidonias hybrida) and Its Impact on Breeding Success

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