Breeding Biology of the Purple Swamphen (Porphyrio porphyrio) at Tirunelveli, South India

Doss, D. Paramanantha Swami; Gopukumar, N.; Kandula, Sripathi

doi:10.1676/08-101.1

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Year-round breeding was also reported for Western Swamphens in Italy (Grussu, 1999). In contrast, egg-laying in Western Swamphens was restricted to March and April in Algeria (Mouslim et al, 2014) and in Grey-headed Swamphens to January-April in southern India (Doss et al, 2009).…”

Section: Breeding Behaviourmentioning

confidence: 89%

“…Purple Swamphen clutch size varies by population; communal clutches are larger than single clutches. Grey-headed Swamphen clutch size in India was 4.5 eggs (range three to seven, n = 25; Doss et al, 2009). Incubation begins after the penultimate egg is laid.…”

Section: Breeding Behaviourmentioning

confidence: 99%

“…Incubation begins after the penultimate egg is laid. The incubation period varies among populations but is 19-22 days for Grey-headed Swamphens in India (Doss et al, 2009). From about day 2, chicks can feed themselves but are reliant on adults for most of their food until they reach about 2 months of age, after which the juveniles feed themselves exclusively (Craig, 1980).…”

Section: Breeding Behaviourmentioning

confidence: 99%

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Invasive birds: global trends and impacts

2020

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This 381-paged book covers the biology, ecology, impact and management of 34 common alien invasive species, with reviews on the history and context of avian introductions and invasions in five major regions (Oceania, Africa, Europe (including the Middle East, Asia and South America)), as well as management challenges and the potential of citizen science for monitoring alien birds. The book pitches at the introductory level and is ideal for readers to gain a quick and comprehensive view of the current status of global avian invasions. It has brought the records and research of avian invasion one step ahead of other alien invasive animal taxa. Many chapters contain distribution maps and data tables on the diet and morphology of the species, providing a good reference for the species and its management issues. Each chapter also contains a rich list of references that could help readers dive further into the topic.

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Section: Breeding Behaviourmentioning

confidence: 89%

Section: Breeding Behaviourmentioning

confidence: 99%

Section: Breeding Behaviourmentioning

confidence: 99%

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Invasive birds: global trends and impacts

2020

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Systematic review of avian hatching failure and implications for conservation

et al. 2023

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Avian hatching failure is a widespread phenomenon, affecting around 10% of all eggs that are laid and not lost to predation, damage, or desertion. Our understanding of hatching failure is limited in terms of both its underpinning mechanisms and its occurrence across different populations. It is widely acknowledged that rates of hatching failure are higher in threatened species and in populations maintained in captivity compared to wild, non-threatened species, but these differences have rarely been quantified and any broader patterns remain unexplored. To examine the associations between threat status, management interventions, and hatching failure across populations we conducted a phylogenetically controlled multilevel meta-analysis across 231 studies and 241 species of birds. Our data set included both threatened (Critically Endangered, Endangered, and Vulnerable) and non-threatened (Near Threatened and Least Concern) species across wild and captive populations, as well as 'wild managed' ('free-living') populations. We found the mean overall rate of hatching failure across all populations to be 16.79%, with the hatching failure rate of wild, non-threatened species being 12.40%. We found that populations of threatened species experienced significantly higher mean hatching failure than populations of non-threatened species. Different levels of management were also associated with different rates of hatching failure, with wild populations experiencing the lowest rate of hatching failure, followed by wild managed populations, and populations in captivity experiencing the highest rate. Similarly, populations that were subject to the specific management interventions of artificial incubation, supplementary feeding, and artificial nest provision displayed significantly higher rates of hatching failure than populations without these interventions. The driver of this correlation between hatching failure and management remains unclear, but could be an indirect result of threatened species being more likely to have lower hatching success and also being more likely to be subject to management, indicating that conservation efforts are fittingly being focused towards the species potentially most at risk from extinction. This is the most comprehensive comparative analysis of avian hatching failure that has been conducted to date, and the first to quantify explicitly how threat status and management are associated with the rate of hatching failure in a population. We discuss the implications of our results, focusing on their potential applications to conservation. Although we identified several factors clearly associated with variation in hatching failure, a significant amount of heterogeneity was not explained by our meta-analytical model, indicating that other factors influencing hatching failure were not included here. We discuss what these factors might be and suggest avenues for further research. Finally, we discuss the inconsistency in how hatching failure is defined and reported within the literature, and propose a stan...

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