Breeding Phenology and Chick Growth in the Brown Booby Sula leucogaster (Sulidae) on Nakanokamishima, Japan

2018 ◽  
Vol 17 (1) ◽  
pp. 87-93
Author(s):  
Hiroyoshi Kohno ◽  
Takashi Yamamoto ◽  
Akira Mizutani ◽  
Miku Murakoshi ◽  
Ken Yoda
Keyword(s):  
Breeding Phenology ◽  
Chick Growth ◽  
Sula Leucogaster

Dietary Changes and Poor Reproductive Performance in Glaucous-Winged Gulls

The Auk ◽  
1984 ◽  
Vol 101 (3) ◽  
pp. 532-541 ◽  
Author(s):  
Edward C. Murphy ◽  
Robert H. Day ◽  
Karen L. Oakley ◽  
A. Anne Hoover
Keyword(s):  
Reproductive Success ◽  
Mytilus Edulis ◽  
Reproductive Performance ◽  
Growth Rates ◽  
Egg Laying ◽  
Breeding Phenology ◽  
Chick Growth ◽  
Dietary Changes ◽  
Blue Mussels ◽  
Preferred Foods

Abstract The breeding phenology of Glaucous-winged Gulls (Larus glaucescens) on Squab Island, Aialik Bay, Alaska in 1979 was identical to that in 1980, but clutch sizes and later reproductive performance differed markedly. In 1979, clutch sizes were small, but chick growth rates and survivorship were high. In contrast, clutch sizes were large in 1980, but chick growth rates were slow, and chick survivorship was extremely low. The different patterns of reproductive success appear to be related primarily to annual differences in foods utilized by adults. When adults fed primarily on blue mussels (Mytilus edulis), reproductive performance suffered, i.e. at the time of egg laying in 1979 and during the chick period in 1980. A switch to mussels from other prey types thus probably indicates a lack of availability of more suitable or preferred foods. Reproductive success at this colony appears to be strongly food limited; the timing of such limitation is not confined to a particular stage of reproduction.

scholarly journals Contrasting impacts of environmental variability on the breeding biology of two sympatric small procellariiform seabirds in south-eastern Australia

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0250916
Author(s):  
Yonina H. Eizenberg ◽  
Aymeric Fromant ◽  
Arnaud Lec’hvien ◽  
John P. Y. Arnould
Keyword(s):  
Breeding Success ◽  
Marine Ecosystems ◽  
Breeding Biology ◽  
Breeding Phenology ◽  
Chick Growth ◽  
Seabird Species ◽  
South Eastern ◽  
Long Term Study ◽  
Eastern Australia ◽  
South Eastern Australia

Seabirds play a vital role in marine ecosystems and the long-term study of their responses to environmental variations can be used to monitor the effects of climate change on marine fauna. However, slight differences in similar seabird species result in a range of responses which complicates our understanding of the effects of environmental changes to marine ecosystems. The present study investigated inter-annual differences in the breeding biology (breeding phenology, chick growth rates and breeding success) and environmental conditions (seasonal sea surface temperatures) of important foraging areas in two sympatric small Procellariiform species, the fairy prion (Pachyptila turtur) and the common diving petrel (Pelecanoides urinatrix), over four reproductive seasons (2017–2020) in Bass Strait, south-eastern Australia. Marine heatwaves occurred during the years of 2018/19 and 2019/20 and coincided with years of delayed laying dates, slower chick growth and reduced breeding success, in both species. While fairy prions maintained a relatively high breeding success and broadly constant breeding phenology, common diving petrels delayed the start of the breeding season by up to 50 days and experienced dramatic collapses in breeding success in years of high marine heat wave occurrence. The difference in foraging ecology and physiological capacity (largely in the production of stomach oils and fasting abilities of adults and chicks) between both species are likely to influence the variability and phenology in the observed breeding seasons.

Brown Booby (Sula leucogaster)

2002 ◽  
Author(s):  
Elizabeth A. Schreiber ◽  
R. L. Norton
Keyword(s):  
Sula Leucogaster

Brown Booby (Sula leucogaster)

2002 ◽  
Author(s):  
Elizabeth A. Schreiber ◽  
R. L. Norton
Keyword(s):  
Sula Leucogaster

European breeding phenology of the invasive common waxbill, a sub-Saharan opportunistic breeder

2021 ◽  
Author(s):  
Patrícia Beltrão ◽  
Ana Cristina R. Gomes ◽  
Cristiana I. Marques ◽  
Soraia Guerra ◽  
Helena R. Batalha ◽  
...  
Keyword(s):  
Breeding Phenology ◽  
Sub Saharan ◽  
Common Waxbill

scholarly journals SOME PROPERTIES OF AN UNIDENTIFIED CHICK GROWTH FACTOR FOUND IN CONDENSED FISH SOLUBLES

1948 ◽  
Vol 173 (1) ◽  
pp. 117-122 ◽  
Author(s):  
A.R. Robblee ◽  
C.A. Nichol ◽  
W.W. Cravens ◽  
C.A. Elvehjem ◽  
J.G. Halpin
Keyword(s):  
Growth Factor ◽  
Chick Growth

scholarly journals Temporal changes in reproductive success and optimal breeding decisions in a long-distance migratory bird

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Cynthia Reséndiz-Infante ◽  
Gilles Gauthier
Keyword(s):  
Reproductive Success ◽  
Clutch Size ◽  
Environmental Changes ◽  
Migratory Bird ◽  
Laying Date ◽  
Negative Consequences ◽  
Breeding Phenology ◽  
Additional Time ◽  
Long Distance ◽  
Seasonal Decline

AbstractMany avian migrants have not adjusted breeding phenology to climate warming resulting in negative consequences for their offspring. We studied seasonal changes in reproductive success of the greater snow goose (Anser caerulescens atlantica), a long-distance migrant. As the climate warms and plant phenology advances, the mismatch between the timing of gosling hatch and peak nutritive quality of plants will increase. We predicted that optimal laying date yielding highest reproductive success occurred earlier over time and that the seasonal decline in reproductive success increased. Over 25 years, reproductive success of early breeders increased by 42%, producing a steeper seasonal decline in reproductive success. The difference between the laying date producing highest reproductive success and the median laying date of the population increased, which suggests an increase in the selection pressure for that trait. Observed clutch size was lower than clutch size yielding the highest reproductive success for most laying dates. However, at the individual level, clutch size could still be optimal if the additional time required to acquire nutrients to lay extra eggs is compensated by a reduction in reproductive success due to a delayed laying date. Nonetheless, breeding phenology may not respond sufficiently to meet future environmental changes induced by warming temperatures.

scholarly journals Preparing for translocations of a Critically Endangered petrel through targeted monitoring of nest survival and breeding biology

Oryx ◽  
2021 ◽  
pp. 1-9
Author(s):  
Johannes H. Fischer ◽  
Heiko U. Wittmer ◽  
Graeme A. Taylor ◽  
Igor Debski ◽  
Doug P. Armstrong
Keyword(s):  
Southern Oscillation ◽  
Nest Survival ◽  
Growth Curves ◽  
Breeding Biology ◽  
Source Population ◽  
Breeding Phenology ◽  
Chick Survival ◽  
Egg Survival ◽  
Dune System ◽  
Burrow Density

Abstract The population of the recently-described Whenua Hou diving petrel Pelecanoides whenuahouensis comprises c. 200 adults that all breed in a single 0.018 km2 colony in a dune system vulnerable to erosion. The species would therefore benefit from the establishment of a second breeding population through a translocation. However, given the small size of the source population, it is essential that translocations are informed by carefully targeted monitoring data. We therefore modelled nest survival at the remaining population in relation to potential drivers (distance to sea and burrow density of conspecifics and a competitor) across three breeding seasons with varying climatic conditions as a result of the southern oscillation cycle. We also documented breeding phenology and burrow attendance, and measured chicks, to generate growth curves. We estimated egg survival at 0.686, chick survival at 0.890, overall nest survival at 0.612, and found no indication that nest survival was affected by distance to sea or burrow density. Whenua Hou diving petrels laid eggs in mid October, eggs hatched in late November, and chicks fledged in mid January at c. 86% of adult weight. Burrow attendance (i.e. feeds) decreased from 0.94 to 0.65 visits per night as chicks approached fledging. Nest survival and breeding biology were largely consistent among years despite variation in climate. Nest survival estimates will facilitate predictions about future population trends and suitability of prospective translocation sites. Knowledge of breeding phenology will inform the timing of collection of live chicks for translocation, and patterns of burrow attendance combined with growth curves will structure hand-rearing protocols. A tuhinga whakarāpopoto (te reo Māori abstract) can be found in the Supplementary material.

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