scholarly journals Leaf bathing in ring-necked parakeets Psittacula krameri

2021 ◽  
pp. 131-133
Author(s):  
X Tomàs ◽  
J. C. Senar
Keyword(s):  
Water Droplets ◽  
Monk Parakeet ◽  
The Past ◽  
Myiopsitta Monachus ◽  
Psittacula Krameri ◽  
Predatory Strategy ◽  
Do So

Bathing is one of the main actions birds perform as part of their preening. They may bathe in water, snow, dust, and even ants. Leaf bathing, where birds make use of water droplets on leaves to bathe, is less common. Here we describe four observations between 2017 and 2021 of ring-necked parakeets Psittacula krameri bathing on water droplets on leaves during rain.Over the past twenty years we have often seen monk parakeets Myiopsitta monachus bathing in puddles but never on leaves. The monk parakeet often forages on the ground, but ring-necked parakeets are reluctant to do so. We therefore interpret that the leaf bathing we observed in the ring-necked parakeet could be an anti-predatory strategy to avoid going down to the ground.

scholarly journals Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri)

2019 ◽  
pp. 389-395 ◽  
Author(s):  
D. Mazzoni ◽  
N. A. Borray-Escalante ◽  
A. Ortega–Segalerva ◽  
L. Arroyo ◽  
J. González–Solís ◽  
...  
Keyword(s):  
Nitrogen Isotopes ◽  
Single Species ◽  
Prey Type ◽  
Monk Parakeet ◽  
Carbon And Nitrogen ◽  
Myiopsitta Monachus ◽  
Psittacula Krameri ◽  
Tissue Discrimination ◽  
The Difference ◽  
Discrimination Factors

Stable isotope analyses (SIAs) have been widely used in recent years to infer the diet of many species. This isotopic approach requires using diet to tissue discrimination factors (DTDFs) for each prey type and predator tissue, i.e., to determine the difference between the isotopic composition of the predator tissues and the different prey that conform its diet. Information on DTDF values in Psittaciformes is scarce. The aim of this study was to assess DTDF values for the carbon and nitrogen isotopes of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri), two invasive alien species of concern. We fed captive birds of the two parakeet species on a single–species diet based on sunflower seeds to establish the DTDFs for the blood and feathers. In the monk parakeet (N = 9) DTDFs were Δδ13C 2.14 ‰ ± 0.90 and Δδ15N 3.21 ‰ ± 0.75 for the blood, and Δδ13C 3.97 ‰ ± 0.90 and Δδ15N 3.67 ‰ ± 0.74 for the feathers. In the ring–necked parakeet (N = 9), the DTDFs were Δδ13C (‰) 2.58 ± 0.90 and Δδ15N (‰) 2.35 ± 0.78 for the blood, and Δδ13C 3.64 ‰ ± 0.98 and Δδ15N 4.10 ‰ ± 1.84 for the feathers. DTDF values for the ring–necked parakeet blood were significantly higher than those for the monk parakeet blood. No difference was found between the two species in the DTDF for feathers. Our findings provide the first values of DTDFs for blood and feathers in these parakeets, factors that are key to infer the diet of these species based on SIA.

scholarly journals Microsatellite characterisation and sex-typing in two invasive parakeet species, the monk parakeet Myiopsitta monachus and ring-necked parakeet Psittacula krameri

2019 ◽  
Vol 47 (2) ◽  
pp. 1543-1550
Author(s):  
Francesca S. E. Dawson Pell ◽  
Ben J. Hatchwell ◽  
Alba Ortega-Segalerva ◽  
Deborah A. Dawson ◽  
Gavin J. Horsburgh ◽  
...  
Keyword(s):  
Invasive Species ◽  
Microsatellite Loci ◽  
Management Strategies ◽  
Invasion Success ◽  
Sex Typing ◽  
Monk Parakeet ◽  
Myiopsitta Monachus ◽  
Psittacula Krameri ◽  
Scale Population ◽  
Negative Impacts

AbstractInvasive species can have wide-ranging negative impacts, and an understanding of the process and success of invasions can be vital to determine management strategies, mitigate impacts and predict range expansions of such species. Monk parakeets (Myiopsitta monachus) and ring-necked parakeets (Psittacula krameri) are both widespread invasive species, but there has been little research into the genetic and social structure of these two species despite the potential links with invasion success. The aim of this study was to isolate novel microsatellite loci from the monk parakeet and characterise them in both monk and ring-necked parakeets in order to facilitate future investigations into their behaviour and population ecology. Sex-typing markers were also tested in both species. Of the 20 microsatellite loci assessed in 24 unrelated monk parakeets, 16 successfully amplified and were polymorphic displaying between 2 and 14 alleles (mean = 8.06). Expected heterozygosity ranged from 0.43 to 0.93 and observed heterozygosity ranged from 0.23 to 0.96. Nine of the 20 loci also successfully amplified and were polymorphic in the ring-necked parakeet, displaying between 2 and 10 alleles. Suitable markers to sex both species and a Z-linked microsatellite locus were identified. A multiplex marker set was validated for monk parakeets. These novel microsatellite loci will facilitate fine and broad-scale population genetic analyses of these two widespread invasive species.

scholarly journals Nesting innovations allow population growth in an invasive population of rose-ringed parakeets

2021 ◽  
Author(s):  
Dailos Hernández-Brito ◽  
José L Tella ◽  
Guillermo Blanco ◽  
Martina Carrete
Keyword(s):  
Invasive Species ◽  
Population Growth ◽  
Native Species ◽  
Behavioral Plasticity ◽  
Monk Parakeet ◽  
Tree Cavities ◽  
Myiopsitta Monachus ◽  
Psittacula Krameri ◽  
Management Plans ◽  
Nesting Association

Abstract Certain traits of recipient environments, such as the availability of limiting resources, strongly determine the establishment success and spread of non-native species. These limitations may be overcome through behavioral plasticity, allowing them to exploit alternative resources. Here, we show how a secondary cavity nester bird, the rose-ringed parakeet Psittacula krameri, innovates its nesting behavior as a response to the shortage of tree cavities for nesting in its invasive range in Tenerife (Canary Islands). We observed that some breeding pairs excavated their own nest cavities in palms, thus becoming primary cavity nester, whereas others occupied nests built with wood sticks by another invasive species, the monk parakeet Myiopsitta monachus. The use of these novel nesting strategies increased the number of breeding pairs by up to 52% over 6 years, contributing to a 128.8% increase of the whole population. Innovative nests were located at greater heights above ground and were more aggregated around conspecifics but did not result in greater breeding success than natural cavities. Occupation of monk parakeet colonies by rose-ringed parakeets also benefited the former species through a protective-nesting association against nest predators. Our results show how an invasive species innovate nesting behaviors and increase nest-site availability in the recipient environment, thus facilitating its population growth and invasion process. Potential behavioral innovations in other invasive rose-ringed parakeet populations may be overlooked, and should be considered for effective management plans.

scholarly journals The Number and Distribution of Introduced and Naturalized Parrots

Diversity ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 412
Author(s):  
Carlos E. Calzada Preston ◽  
Stephen Pruett-Jones
Keyword(s):  
Native Species ◽  
The United States ◽  
Ecological Impacts ◽  
Native Range ◽  
Monk Parakeet ◽  
Myiopsitta Monachus ◽  
Psittacula Krameri ◽  
Breeding Populations ◽  
In The Wild ◽  
Parrot Species

Parrots have been transported and traded by humans for at least the last 2000 years and this trade continues unabated today. This transport of species has involved the majority of recognized parrot species (300+ of 382 species). Inevitably, some alien species either escape captivity or are released and may establish breeding populations in the novel area. With respect to parrots, established but alien populations are becoming common in many parts of the world. In this review, we attempt to estimate the total number of parrot species introduced into the wild in non-native areas and assess how many of these have self-sustaining breeding populations. Based the public databases GAVIA, eBird, and iNaturalist, 166 species of Psittaciformes have been introduced (seen in the wild) into 120 countries or territories outside of the native range. Of these, 60 species are naturalized, and an additional 11 species are breeding in at least one country outside of their native range (86 countries or territories total). The Rose-ringed Parakeet (Psittacula krameri) and Monk Parakeet (Myiopsitta monachus) are the most widely distributed and successful of the introduced parrots, being naturalized in 47 and 26 countries or territories, respectively. Far and away, the United States and its territories support the greatest number of naturalized parrots, with 28 different species found in either the continental US, or Hawaii or Puerto Rico. Naturalized species as well as urbanized native species of parrots are likely to continue increasing in numbers and geographical range, and detailed studies are needed to both confirm species richness in each area as well mitigate potential ecological impacts and conflicts with humans.

Imagining Mary Magdalene

2014 ◽  
Vol 7 (1) ◽  
pp. 1-25
Author(s):  
Jodie Eichler-Levine
Keyword(s):  
Comic Books ◽  
Historical Novels ◽  
Religion And Spirituality ◽  
Mary Magdalene ◽  
The Past ◽  
Scholarly Discourse ◽  
Do So

In this article I analyze how Americans draw upon the authority of both ancient, so-called “hidden” texts and the authority of scholarly discourse, even overtly fictional scholarly discourse, in their imaginings of the “re-discovered” figure of Mary Magdalene. Reading recent treatments of Mary Magdalene provides me with an entrance onto three topics: how Americans see and use the past, how Americans understand knowledge itself, and how Americans construct “religion” and “spirituality.” I do so through close studies of contemporary websites of communities that focus on Mary Magdalene, as well as examinations of relevant books, historical novels, reader reviews, and comic books. Focusing on Mary Magdalene alongside tropes of wisdom also uncovers the gendered dynamics at play in constructions of antiquity, knowledge, and religious accessibility.

Pakistan’s Development: Successes, Failures, and Future Tasks (Presidential Remarks)

1997 ◽  
Vol 36 (4I) ◽  
pp. 321-331
Author(s):  
Sarfraz Khan Qureshi
Keyword(s):  
Indian Subcontinent ◽  
General Meeting ◽  
The Past ◽  
Past Half Century ◽  
The Social ◽  
The Subject ◽  
Golden Jubilee ◽  
Freedom Movement ◽  
Past Half ◽  
Do So

It is an honour for me as President of the Pakistan Society of Development Economists to welcome you to the 13th Annual General Meeting and Conference of the Society. I consider it a great privilege to do so as this Meeting coincides with the Golden Jubilee celebrations of the state of Pakistan, a state which emerged on the map of the postwar world as a result of the Muslim freedom movement in the Indian Subcontinent. Fifty years to the date, we have been jubilant about it, and both as citizens of Pakistan and professionals in the social sciences we have also been thoughtful about it. We are trying to see what development has meant in Pakistan in the past half century. As there are so many dimensions that the subject has now come to have since its rather simplistic beginnings, we thought the Golden Jubilee of Pakistan to be an appropriate occasion for such stock-taking.

Monk Parakeet (Myiopsitta monachus)

1998 ◽  
Author(s):  
Mark F. Spreyer ◽  
Enrique H. Bucher
Keyword(s):  
Monk Parakeet ◽  
Myiopsitta Monachus

Other People's Struggles

2019 ◽  
Author(s):  
Nicholas Owen
Keyword(s):  
Social Psychology ◽  
Social Movements ◽  
Political Theory ◽  
Identity Politics ◽  
Global Justice ◽  
British History ◽  
Original Theory ◽  
The Past ◽  
Contemporary Politics ◽  
Do So

Other People’s Struggles is the first attempt in over forty years to explain the place of “conscience constituents” in social movements. Conscience constituents are people who participate in a movement but do not stand to benefit if it succeeds. Why do such people participate when they do not stand to benefit? Why are they sometimes present and sometimes absent in social movements? Why and when is their participation welcome to those who do stand to benefit, and why and when is it not? The work proposes an original theory to answer these questions, crossing discipline boundaries to draw on the findings of social psychology, philosophy, and normative political theory, in search of explanations of why people act altruistically and what it means to others when they do so. The theory is illustrated by examples from British history, including the antislavery movement, the women’s suffrage and liberation movements, labor and socialist movements, anticolonial movements, antipoverty movements, and movements for global justice. Other People’s Struggles also contributes to new debates concerning the rights and wrongs of “speaking for others.” Debates concerning the limits of solidarity—who can be an “ally” and on what terms—have become very topical in contemporary politics, especially in identity politics and in the new “populist” movements. The book provides a theoretical and empirical account of how these questions have been addressed in the past and how they might be framed today.

‘Higher then to her no bookes doe reach’

2018 ◽  
Author(s):  
Martha Vandrei
Keyword(s):  
Early Stage ◽  
Deep Understanding ◽  
Contemporary Philosophy ◽  
James I ◽  
Historical Method ◽  
The Past ◽  
Classical World ◽  
Material Evidence ◽  
Do So

This chapter and the following both draw the reader into seventeenth-century understandings of the past, and of Boudica in particular, and makes clear that in a time before disciplines, writers of ‘history’ were erudite commentators, immersed in political thought, the classical world, and contemporary ideas, as well as in drama, poetry, and the law. Chapter 1 shows the subtleties of Boudica’s place in history at this early stage by giving sustained attention to the work of Edmund Bolton (1574/5–c.1634), the first person to analyse the written and material evidence for Boudica’s deeds, and the last to do so in depth before the later nineteenth century. Bolton’s distaste for contemporary philosophy and his loyalty to James I were highly influential in determining the way the antiquary approached Boudica and her rebellion; but equally important was Bolton’s deep understanding of historical method and the strictures this placed on his interpretive latitude.

scholarly journals Fine‐scale genetic structure reflects limited and coordinated dispersal in the colonial monk parakeet, Myiopsitta monachus

2021 ◽  
Author(s):  
Francesca S. E. Dawson Pell ◽  
Juan Carlos Senar ◽  
Daniel W. Franks ◽  
Ben J. Hatchwell
Keyword(s):  
Genetic Structure ◽  
Fine Scale ◽  
Monk Parakeet ◽  
Myiopsitta Monachus
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