Foraging behaviour of the Common Myna (Acridotheres tristis) in relation to vigilance and group size

2007 ◽  
Vol 107 (4) ◽  
pp. 315-320 ◽  
Author(s):  
Philip Newey
Keyword(s):  
Group Size ◽  
Foraging Behaviour ◽  
Common Myna ◽  
Acridotheres Tristis ◽  
The Common

Observation record of the Common Myna (Acridotheres tristis) in South Korea

2020 ◽  
Vol 27 (2) ◽  
pp. 142-145
Author(s):  
Seok-Jun Son ◽  
Jae-Pyoung Yu ◽  
In-Kyu Kim ◽  
Jung-Lea Kim ◽  
Jung-Hoon Kang
Keyword(s):  
South Korea ◽  
Common Myna ◽  
Acridotheres Tristis ◽  
The Common

scholarly journals A survey of recent introduction events, spread and mitigation efforts of mynas (Acridotheres sp.) in Spain and Portugal

2015 ◽  
Vol 38 (1) ◽  
pp. 121-127
Author(s):  
S. Saavedra ◽  
◽  
A. Maraver ◽  
J. D. Anadón ◽  
J. L. Tella ◽  
...  
Keyword(s):  
Field Survey ◽  
Invasive Alien Species ◽  
Breeding Population ◽  
Island Populations ◽  
Common Myna ◽  
Breeding Populations ◽  
Preventive Actions ◽  
Acridotheres Tristis ◽  
The Common ◽  
Exponential Population Growth

The common myna Acridotheres tristis is listed among the world’s 100 worst invasive alien species. We combined previous records with a field survey to update the extent and fate of myna introductions in Spain and Portugal. Results suggest that there have been at least 22 independent accidental introductions of three myna species throughout the Iberian peninsula and three archipelagos since the early 1990s. While bank mynas (A. ginginianus) did not become established elsewhere, common mynas reached breeding populations on four islands. Eradication efforts allowed the extirpation of these breeding island populations, but common mynas continue to breed in the Tagus Estuary (continental Portugal). In this region, there is also a breeding population of crested mynas (A. cristatellus), which was undergone an exponential population growth in the last decade. To avoid further accidental introductions, eradication campaigns should be combined with preventive actions aiming to stop the trade of these species in Europe.

scholarly journals Is It Benign or Is It a Pariah? Empirical Evidence for the Impact of the Common Myna (Acridotheres tristis) on Australian Birds

PLoS ONE ◽  
2012 ◽  
Vol 7 (7) ◽  
pp. e40622 ◽  
Author(s):  
Kate Grarock ◽  
Christopher R. Tidemann ◽  
Jeffrey Wood ◽  
David B. Lindenmayer
Keyword(s):  
Empirical Evidence ◽  
Common Myna ◽  
Australian Birds ◽  
Acridotheres Tristis ◽  
The Common ◽  
The Impact

Testis Growth and Regression in Harmful Birds in the Punjab in Relation to Some Environmental Factors.

1978 ◽  
Vol 26 (1) ◽  
pp. 39 ◽  
Author(s):  
HR Dang ◽  
SS Guraya
Keyword(s):  
Environmental Factors ◽  
Environmental Temperature ◽  
Passer Domesticus ◽  
Reproductive Behaviour ◽  
Testis Weight ◽  
Common Myna ◽  
House Crow ◽  
Acridotheres Tristis ◽  
The Common ◽  
Harmful Species

Testis growth and regression were studied, in relation to environmental temperature, sunshine, relative humidity and rainfall, in the house crow Corvus splendens, the common myna Acridotheres tristis and the house sparrow Passer domesticus, all of which are harmful species in the Punjab. Testis weight varied greatly during the year, but the species differed in their response to environmental conditions. The crow and the myna have active testes during May-July and April-July respectively; in the sparrow the testes are active twice in the year, February-June and September-October. The environmental factors are not sufficient to regulate the reproductive behaviour of these birds in the Punjab, and it is suggested that the reproductive state of birds is determined by a combination of exteroceptive and enteroceptive factors which varies considerably among species.

Evolution in the introduced New Zealand populations of the common myna, Acridotheres tristis (Aves: Sturnidae)

1979 ◽  
Vol 57 (3) ◽  
pp. 570-584 ◽  
Author(s):  
Allan J. Baker ◽  
Abdul Moeed
Keyword(s):  
New Zealand ◽  
Discriminant Analysis ◽  
Univariate Analysis ◽  
Size Variation ◽  
Climatic Conditions ◽  
Morphometric Variation ◽  
The North ◽  
Common Myna ◽  
Acridotheres Tristis ◽  
The Common

Common mynas were introduced into New Zealand from Australia in the 1870's. Seventy birds released at Wellington have apparently given rise to populations that now occur almost exclusively north of latitude 40° S. Morphometric variation in 28 characters of 307 adults was assessed statistically, based on eight samples spanning their New Zealand range. Univariate analysis revealed that 17 characters of males and 13 of females varied significantly among localities and that birds tend to be larger in the north. Discriminant analysis confirmed the north–south pattern of differentiation but disclosed that the newly established northern populations are very similar morphometrically. Both sexes have differentiated among localities in size and shape. Size variation is aligned with temperature only in males, and shape differences are associated with variation in precipitation in both sexes and altitude in females, females have differentiated in fewer characters than males, but overall, they show a stronger relationship between interlocality and intralocality character variability. Although the adaptive basis of increased size in warmer climates is unclear, the consistency of character covariation in localities with different climatic conditions argues against an ecophenotypic explanation. It is therefore concluded that the New Zealand populations are in the early stages of adaptive differentiation.

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