scholarly journals Breeding record of Black-headed Ibis Threskiornis melanocephalus (Aves: Threskiornithidae) at Mavoor wetland, Kozhikode District, Kerala, India

2021 ◽  
Vol 13 (14) ◽  
pp. 20299-20301
Author(s):  
C.T. Shifa

Black-headed Ibis Threskiornis melanocephalus is a nomadic and medium sized waterbird foraging in shallow water habitats and is listed under Near-Threatened category of IUCN. Though it has a widespread distribution within Kerala, little is known about their breeding sites and their ecology. In Kerala, only three nesting sites were reported so far. Present study found an additional nesting site in Mavoor wetland, which is the first record in Kozhikode district and fourth site for Kerala.

2016 ◽  
Vol 3 (1) ◽  
pp. 53-55
Author(s):  
Thangalakshmi R ◽  
Eswaran R

For the conservation of birds, especially birds like migratory waders, documentation and protection of foraging sites cum aggregation sites along with breeding sites are crucial. These birds also use many sites of urban wetlands and shallow water too as foraging sites at extreme conditions. The present work is to report a new foraging cum aggregation site of a near threatened species such as Painted Stork (Mycteria leucocephala) and Spot billed Pelican (Pelicanus philippensis) in Madurai, Tamilnadu. Painted Stork was recorded more (74+33.01) when compared to Spot billed Pelican (49+26.32). Maximum of 120 individuals, a minimum of 35 individuals of Painted Stork was recorded per day. A detailed community level study on migratory waders at these sites is crucial for the conservation of these birds


2021 ◽  
Vol 29 (1) ◽  
pp. 186-191
Author(s):  
Mohsen Kalboussi

Abstract During fieldworks in 2019, a pair of Red-rumped Swallows (Cecropis daurica) were seen building their nest (June) and one of them brooding (August). The pair was still present in the area by the end of September, while all other swallows left this breeding area. In June 2020, the nest entrance was destroyed and the nest was occupied by a pair of Passer sp. Another nest of C. daurica was found in an abandoned building but was completely destroyed. This observation is the first record concerning an attempt and failure of nesting of the species in Tunisia. The nesting area of the Red-rumped Swallow is extended to the Mediterranean in southern Europe and to northwest Africa. The nesting sites are described, and the extension of the nesting area is discussed in this work.


2018 ◽  
Vol 10 (10) ◽  
pp. 12337-12343
Author(s):  
Subramanian Narayani ◽  
Sasidharan Venu ◽  
Andrea Joan D'Silva

The present study was undertaken to compare beach characteristics associated with turtle nesting in the Andaman group of islands.  Karmatang, Kalipur, Ramnagar, Chidiyatapu, Carbyn’s Cove, and Wandoor were chosen as study sites.  Beach slope, sand grain characteristics, and general vegetation patterns were analysed.  The angle of inclination of the beach slope ranged from 2.06 to 8.3 degrees.  Beaches with a higher angle had a comparatively higher number of nesting sites.  The study shows that a single factor does not make a beach more conducive for nesting.  Chidiyatapu has the widest beach but lacks other features and so it is not a preferred nesting site.  The grain size of sand in Wandoor is highly favourable, but the intertidal region is not long and there are streams that can drown the nests.  Karmatang has a long beach and a higher slope angle.  Ramnagar has a moderate beach length and a high slope angle.  The dominant grains at both the beaches were found to be granules.  The absence of streams and artificial light, fewer number of anthropogenic activities, lack of obstacles, the presence of bordering vegetation, and a conducive beach slope with granular sand grains make Ramnagar, Karmatang, and Kalipur ideal for turtle nesting.


2019 ◽  
Vol 40 (4) ◽  
pp. 403-423 ◽  
Author(s):  
Gabriela Banon ◽  
Eduardo Arraut ◽  
Francisco Villamarín ◽  
Boris Marioni ◽  
Gabriel Moulatlet ◽  
...  

Abstract Crocodilians usually remain inside or near their nests during most vulnerable life stages (as eggs, neonates and reproductive females). Thus, protection of nesting sites is one of the most appropriate conservation actions for these species. Nesting sites are often found across areas with difficult access, making remote sensing a valuable tool used to derive environmental variables for characterisation of nesting habitats. In this study, we (i) review crocodilian nesting habitats worldwide to identify key variables for nesting site distribution: proximity to open-water, open-water stability, vegetation, light, precipitation, salinity, soil properties, temperature, topography, and flooding status, (ii) present a summary of the relative importance of these variables for each crocodilian species, (iii) identify knowledge gaps in the use of remote sensing methods currently used to map potential crocodilian nesting sites, and (iv) provide insight into how these remotely sensed variables can be derived to promote research on crocodilian ecology and conservation. We show that few studies have used remote sensing and that the range of images and methods used comprises a tiny fraction of what is available at little to no cost. Finally, we discuss how the combined use of remote sensing methods – optical, radar, and laser – may help overcome difficulties routinely faced in nest mapping (e.g., cloud cover, flooding beneath the forest canopy, or complicated relief) in a relevant way to crocodilians and to other semiaquatic vertebrates in different environments.


2020 ◽  
Vol 41 (6) ◽  
pp. 870-900 ◽  
Author(s):  
R. Adriana Hernandez-Aguilar ◽  
Trond Reitan

AbstractTo understand how animals select resources we need to analyze selection at different spatial levels or scales in the habitat. We investigated which physical characteristics of trees (dimensions and structure, e.g., height, trunk diameter, number of branches) determined nesting selection by chimpanzees (Pan troglodytes) on two different spatial scales: individual nesting trees and nesting sites. We also examined whether individual tree selection explained the landscape pattern of nesting site selection. We compared the physical characteristics of actual (N = 132) and potential (N = 242) nesting trees in nesting sites (in 15 plots of 25 m × 25 m) and of all trees in actual and potential nesting sites (N = 763 in 30 plots of 25 m × 25 m). We collected data in May and June 2003 in Issa, a dry and open savanna habitat in Tanzania. Chimpanzees selected both the site they used for nesting in the landscape and the trees they used to build nests within a nesting site, demonstrating two levels of spatial selection in nesting. Site selection was stronger than individual tree selection. Tree height was the most important variable for both nesting site and tree selection in our study, suggesting that chimpanzees selected both safe sites and secure trees for sleeping.


1993 ◽  
Vol 71 (8) ◽  
pp. 1690-1693 ◽  
Author(s):  
Naohiko Sagara ◽  
Hisashi Abe ◽  
Hiroaki Okabe
Keyword(s):  

Evidence is presented to show that under certain conditions, three species of Japanese talpine mole, Euroscaptor mizura, Mogera wogura, and Mogera kobeae, persistently use the same nest or nesting site. The moles' nesting sites were detected by the fruiting of an agaric species, Hebeloma radicosum, which specifically colonizes a mole's latrines near its nest. The nests were removed to observe the moles' response. During excavation, the moles often returned to the disturbed sites in search of their nests. The nests were soon reconstructed, followed by refruiting of the mushroom. Thus, one nesting site of E. mizura was used for more than 15 years, despite removal of the nest seven times, and another for more than 5 years, a period ended by the capture of the occupant. Similar results were also obtained with M. wogura and M. kobeae. The occupants may have changed generationally at each site. These persistently used sites seem to be associated with well-drained soil and appropriate vegetation.


2002 ◽  
Vol 50 (2) ◽  
pp. 151 ◽  
Author(s):  
K. Thumm ◽  
M. J. Mahony

The breeding behaviour of the red-crowned toadlet, Pseudophryne australis, was observed both in the field and in captivity. Female and male red-crowned toadlets were active in the field throughout the year. New egg masses were observed all year except mid-winter. Females returned in a gravid condition repeatedly to the breeding site over years and presumably deposited eggs, and a captive female has laid 34 clutches over 7.25 years. P. australis has evolved continuous iteroparity in a region where most frogs breed once a year, seasonally, in reliable long-lasting ponds or permanent creeks. We suggest that the comparatively extreme iteroparity observed is a result of the limitations imposed on the species in the choice of oviposition time, due to unpredictable rainfall, and of the limited availability and suitability of nesting sites. Further, iteroparity may have evolved because there is high variance in reproductive success, or particularly high recruitment losses incurred as a result of the desiccation of embryos or larvae in the ephemeral breeding sites. The adaptive response is to lay small clutches often and to gamble that follow up rains will occur on some occasions to enable recruitment. The alternative, to lay a large clutch of eggs at one time and have the ephemeral pond dry because there was no follow-up rain, would lead to total reproductive loss.


2010 ◽  
Vol 90 (7) ◽  
pp. 1291-1295 ◽  
Author(s):  
Rym Zakhama-Sraieb ◽  
Faouzia Charfi-Cheikhrouha

The marine amphipod fauna of Tunisian shallow water was studied during 2003 to 2009. In this paper, we report—for the first time—the presence of two lessepsian amphipod species Elasmopus pectenicrus and Stenothoe gallensis from the south-east Tunisian coast.


2018 ◽  
Vol 41 (2) ◽  
pp. 189-197
Author(s):  
Vlad Dincă ◽  
Levente Székely

The geometrid mothScopulaorientalis(Alphéraky, 1876) has an apparently disjunct distribution in Europe, with local populations in the Balkans (Macedonia, Bulgaria and Albania where recently discovered), as well as in Ukraine and southern European Russia. In this study, based on morphological and mitochondrial DNA (cytochrome c oxidase subunit 1 – COI) data, we report the presence ofS.orientalisin south-eastern Romania (Dobrogea), at the northernmost limit of the Balkans. The flight time (September) of the recorded specimen, is the latest seasonal record for the Balkans, supporting the presence of at least a partial second generation. The Romanian specimen represented a unique COI haplotype which is differentiated by seven mutations from its genetically closest population in Sivas province, Turkey. The presence ofS.orientalisin Romania reduces the distributional gap between the known Balkan and Ukrainian populations and highlights the potential for a more widespread distribution that needs documentation based on directed studies.


Herpetozoa ◽  
2019 ◽  
Vol 32 ◽  
pp. 45-49
Author(s):  
Valentina de los Ángeles Carvajal-Ocampo ◽  
María Camila Ángel-Vallejo ◽  
Paul David Alfonso Gutiérrez-Cárdenas ◽  
Fabiola Ospina-Bautista ◽  
Jaime Vicente Estévez Varón

The Neotropical Yellow-Headed Gecko Gonatodesalbogularis commonly use cavities in the trees as a microhabitat for egg-laying. Here, we present the first record of this species in Colombia using the tank bromeliad Tillandsiaelongata as nesting sites, along with the occurrence of communal egg-laying in that microhabitat.


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