scholarly journals Investigation of systemic isosporosis outbreaks in an aviary of greenfinch ( Carduelis chloris ) and goldfinch ( Carduelis carduelis ) and a possible link with local wild sparrows ( Passer domesticus )

2020 ◽  
Vol 98 (7) ◽  
pp. 338-344 ◽  
Author(s):  
MC Gosbell ◽  
OM Olaogun ◽  
KHY Luk ◽  
AH Noormohammadi
2014 ◽  
Vol 38 (1) ◽  
pp. 17-19
Author(s):  
Zbigniew Kwieciński ◽  
Paulina Pawlak ◽  
Katarzyna Przybylska

Abstract In 2011 and 2012, an unusual and so far not described foraging behaviour of two finch species was observed in the Barycz valley, W-Poland. Several times Greenfinches Carduelis chlorisbroke off fresh shoots of Scots pine (Pinus silvestris) and then licked up the leaking sap. Afterwards, Goldfinches Carduelis carduelis also licked up the sap from the same spot. We hypothesize that both species take advantage of the antiseptic nature of Pinaceae sap.


NeoBiota ◽  
2013 ◽  
Vol 17 ◽  
pp. 1-18
Author(s):  
Tim Blackburn ◽  
Melanie Monroe ◽  
Becki Lawson ◽  
Cassey Phill ◽  
John Ewen

One feature of global geographic variation in avian body sizes is that they are larger on isolated islands than on continental regions. Therefore, this study aims to assess whether there have been changes in body size following successful establishment for seven passerine bird species (blackbird Turdus merula, song thrush Turdus philomelos, house sparrow Passer domesticus, chaffinch Fringilla coelebs, greenfinch Chloris chloris, goldfinch Carduelis carduelis, yellowhammer Emberiza citrinella) introduced from the continental islands of the UK to the more isolated oceanic landmass of New Zealand in the middle of the nineteenth century. Measures of tarsus length were taken from individuals from contemporary UK and New Zealand populations of these species, and from historical specimens collected around the time that individuals were translocated from the UK to New Zealand. Analysis of Variance was used to test for size differences between contemporary UK and New Zealand populations, and between historical UK and contemporary UK and New Zealand populations. Historical UK populations have longer tarsi, on average, than 12 (7 UK and 5 New Zealand) of the 14 contemporary populations. Significant decreases in tarsus length relative to the historical populations have occurred in the UK for blackbird, chaffinch and greenfinch, and in the New Zealand blackbird population. Contemporary New Zealand house sparrows have significantly longer tarsi, on average, than both historical and contemporary UK populations. Exposure to novel environments may be expected to lead to changes in the morphology and other traits of exotic species, but changes have also occurred in the native range. In fact, contrary to expectations, the most common differences we found were between contemporary and historical UK populations. Consideration of contemporary populations alone would underestimate the true scale of morphological change in these species over time, which may be due to phenotypic plasticity or genetic adaptation to environmental changes experienced by all populations in the last 150 years.


Behaviour ◽  
1956 ◽  
Vol 9 (1) ◽  
pp. 202-213 ◽  
Author(s):  
R.A. Hinde

Abstract1. The behaviour of inter-species hybrids between Carduelis carduelis, Chloris chloris and the domestic Canary was studied. 2. All behaviour patterns which occur in both parent species are unchanged in the hybrids. 3. Behaviour patterns whose form or frequency differs in the parent species, occur in an intermediate condition in the hybrids. 4. Behaviour patterns which occur in one parent species only and which are apparently the result of an evolutionary process in which insignificant intention movements have become stereotyped and exaggerated more in that species than in the other, appear in an intermediate condition in the hybrid. 5. The relation between display components and behaviour tendencies are (qualitatively) unchanged in the hybrids.


2018 ◽  
Vol 49 (4) ◽  
pp. 307
Author(s):  
Y. THEODORIDIS (Ι. ΘΕΟΔΩΡΙΔΗΣ) ◽  
A. ALEXAKIS (ΑΛΕΞΑΚΗΣ Α.) ◽  
Ch. MATARA (ΜΑΤΑΡΑ Χ.)

Blood smears from 541 birds of 11 different species, killed in 4 continuous hunting periods (1977-1980), at Macedonian region, were examined. One hundred and six were found to be infected with the protozoon Haemoproteus. A higher infection rate was observed in the orphean warblers (Sylvia hortensis 58,3%) and, in descending order, in the turtle-doves {Streptopelia turtur 33,3%), the partridges (Perdix per dix 33,3%), the goldfinches (Carduelis carduelis 30,4%), the greenfinche orioles (Carduelis chloriis 29,5%), the house sparrows (Passer domesticus 27,6%), the blackbirds (Turdus merula 15%), the quails (Coturnix coturnix 7,62%), and the CettPs warblers (Cettia cetti 7,1%). The parasite was not found in blood smears from song thrushes (Turdus philomelos) and reavings (Turdus iliacus).


2007 ◽  
Vol 34 (2) ◽  
pp. 307-317 ◽  
Author(s):  
J. SEITZ

Modernization of agriculture, economic development and population increase after the end of the Thirty Years' War caused authorities in many parts of Germany to decree the eradication of so-called pest animals, including the House Sparrow. Farmers were given targets, and had to deliver the heads of sparrows in proportion to the size of their farms or pay fines. At the end of the eighteenth century German ornithologists argued against the eradication of the sparrows. During the mid-nineteenth century, C. L. Gloger, the pioneer of bird protection in Germany, emphasized the value of the House Sparrow in controlling insect plagues. Many decrees were abolished because either they had not been obeyed, or had resulted in people protecting sparrows so that they always had enough for their “deliveries”. Surprisingly, various ornithologists, including Ernst Hartert and the most famous German bird conservationist Freiherr Berlepsch, joined in the war against sparrows at the beginning of the twentieth century, because sparrows were regarded as competitors of more useful bird species. After the Second World War, sparrows were poisoned in large numbers. Persecution of sparrows ended in Germany in the 1970s. The long period of persecution had a significant but not long-lasting impact on House Sparrow populations, and therefore cannot be regarded as a factor in the recent decline of this species in urban and rural areas of western and central Europe.


2006 ◽  
Author(s):  
Peter E. Lowther ◽  
Calvin L. Cink

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