Facultative Interspecific Brood Parasitism in Colonial Breeding Waterbirds in Biebrza National Park, Poland

Niemczynowicz, Agnieszka; Świętochowski, Piotr; Zalewski, Andrzej; Chętnicki, Włodzimierz

doi:10.1675/063.038.0308

Cited by 7 publications

(5 citation statements)

References 27 publications

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“…Using our approach, waterbird colonies around the world could be quickly and accurately counted using drone data. There are many active research teams, often providing information for management, surveying and estimating sizes of breeding colonies of waterbirds, including colonies in Australia [49], Southern India [50] and Poland [51]. But our methodology is also transferable to other aggregations of species, such as the Valdez elephant seal Mirounga leonine colony in Patagonia [52] or macaques Macaca fuscata in tourist areas in Japan [53].…”

Section: Discussionmentioning

confidence: 99%

Counting Mixed Breeding Aggregations of Animal Species Using Drones: Lessons from Waterbirds on Semi-Automation

et al. 2020

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Using drones to count wildlife saves time and resources and allows access to difficult or dangerous areas. We collected drone imagery of breeding waterbirds at colonies in the Okavango Delta (Botswana) and Lowbidgee floodplain (Australia). We developed a semi-automated counting method, using machine learning, and compared effectiveness of freeware and payware in identifying and counting waterbird species (targets) in the Okavango Delta. We tested transferability to the Australian breeding colony. Our detection accuracy (targets), between the training and test data, was 91% for the Okavango Delta colony and 98% for the Lowbidgee floodplain colony. These estimates were within 1-5%, whether using freeware or payware for the different colonies. Our semi-automated method was 26% quicker, including development, and 500% quicker without development, than manual counting. Drone data of waterbird colonies can be collected quickly, allowing later counting with minimal disturbance. Our semi-automated methods efficiently provided accurate estimates of nesting species of waterbirds, even with complex backgrounds. This could be used to track breeding waterbird populations around the world, indicators of river and wetland health, with general applicability for monitoring other taxa.Remote Sens. 2020, 12, 1185 2 of 17 semi-automated methods. The former can be extremely labour-intensive and consequently expensive, particularly for large aggregations of wildlife [26], further complicated when more than one species is counted. Semi-automated methods, including the counting of animals from photographs (e.g., camera traps) and drone imagery, are increasingly being developed around the world [27]. These methods reduce the time required to count and process drone images [28], accelerating the data entry stage and encouraging the use of drones as scientific tools for management. Such benefits allow for real-time monitoring and management decisions and could, for example, assist in the targeted delivery of environmental flows for waterbird breeding events [29].Generally, semi-automated counting methods are most effective for species where there are strong contrasts against the backgrounds, particularly when background colours and shapes are consistent [28]. They can distinguish large single species aggregations on relatively simple backgrounds [30][31][32], up to sixteen avian species (numbering in the hundreds) on simple single colour backgrounds, such as oceans [33,34], or single species aggregations of hundreds of thousands on complex backgrounds [3].Development of flexible, repeatable and efficient methods, using open source software, is important in ensuring methods are applicable across a range of datasets [35,36]. Further, there are potential cost implications of processing data, given that some processing software can be expensive (i.e., compulsory licence fees, called 'payware' in this paper) and so are often only accessible to large organisations in high-income countries [37]. Open source software, or software with optional lic...

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Section: Discussionmentioning

confidence: 99%

Counting Mixed Breeding Aggregations of Animal Species Using Drones: Lessons from Waterbirds on Semi-Automation

et al. 2020

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“…As suggested by the polyphyletic nature of brood parasitism, these pathways have arisen on multiple occasions (Sorenson & Payne, 2002). Recent studies have demonstrated that Charadriiformes resort frequently to nest reuse (Herzog et al., 2018) and they may engage readily in both conspecific and interspecific brood parasitism albeit at a much lower frequency (Niemczynowicz et al., 2015). However, it is unclear to what extent nest reuse may influence brood parasitism (Pearson, 1974).…”

Section: Discussionmentioning

confidence: 99%

“…Opportunistic birds may save time and/or energy required to F I G U R E 1 Study nesting site of waders in the Algerian northern Sahara selecting a nest location and building a nest (Pearson, 1974) with fitness consequences (Cancellieri & Murphy, 2013;Ueda, 1989). For instance, hard substrate, limited nesting space or degraded breeding sites may induce birds to reuse nests (Amat et al, 1999;Herzog et al, 2018;Niemczynowicz et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Interspecific nest reuse between two species of waders in northern Sahara and an overview of records of mixed clutches in Algerian waterbirds

et al. 2022

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“…As long as interspecific brood parasitism was frequently described in Gruiformes (Rallidae) (Forman 2003, Haraszthy 2019b, the phenomenon has rarely been observed within Charadriiformes (Amat 1998, Yom-Tov 2001, Niemczynowicz et al 2015. In this context, these observations are important and can be important points in the understanding of the occurrence and evolution of brood parasitism in birds.…”

Section: Referencesmentioning

confidence: 95%

New cases of facultative interspecific brood parasitism in Black-winged Stilt (Himantopus himantopus) and Eurasian Coot (Fulica atra)

Stermin

2021

Ornis Hungarica

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Many hypotheses try to explain the evolution and possible relations between obligate and facultative brood parasitism in birds. To explore this, a large number of observations and data are needed. Our understanding based on the observations of facultative parasitic species published in the literature is less clear compared to the obligate parasitic species. This communication is about three cases of facultative interspecific brood parasitism. Two nests of Black-headed Gull (Chroicocephalus ridibundus) parasite by Eurasian Coot (Fulica atra) and one nest of Pied Avocet (Recurvirostra avosetta) parasite by Black-winged Stilt (Himantopus himantopus). These observations are significant as long as interspecific brood parasitism was frequently described in Gruiformes (Rallidae) but has rarely observed within Charadriiformes.

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Facultative Interspecific Brood Parasitism in Colonial Breeding Waterbirds in Biebrza National Park, Poland

Cited by 7 publications

References 27 publications

Counting Mixed Breeding Aggregations of Animal Species Using Drones: Lessons from Waterbirds on Semi-Automation

Counting Mixed Breeding Aggregations of Animal Species Using Drones: Lessons from Waterbirds on Semi-Automation

Interspecific nest reuse between two species of waders in northern Sahara and an overview of records of mixed clutches in Algerian waterbirds

New cases of facultative interspecific brood parasitism in Black-winged Stilt (Himantopus himantopus) and Eurasian Coot (Fulica atra)

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