Common Waxbill (Estrilda astrild)

2020 ◽  
Author(s):  
Robert B. Payne ◽  
Arnau Bonan ◽  
Guy M. Kirwan
Keyword(s):  
Common Waxbill

European breeding phenology of the invasive common waxbill, a sub-Saharan opportunistic breeder

2021 ◽  
Author(s):  
Patrícia Beltrão ◽  
Ana Cristina R. Gomes ◽  
Cristiana I. Marques ◽  
Soraia Guerra ◽  
Helena R. Batalha ◽  
...  
Keyword(s):  
Breeding Phenology ◽  
Sub Saharan ◽  
Common Waxbill

PARASITISM OF THE COMMON WAXBILL ESTRILDA ASTRILD BY THE PIN-TAILED WIDOW-BIRD VIDUA MACROURA

Ostrich ◽  
1957 ◽  
Vol 28 (4) ◽  
pp. 214-216 ◽  
Author(s):  
C. J. Skead
Keyword(s):  
The Common ◽  
Common Waxbill

Common Waxbill in Madeira

2017 ◽  
Author(s):  
Germen Postma
Keyword(s):  
Common Waxbill

Predicting the potential distribution of the invasive Common Waxbill Estrilda astrild (Passeriformes: Estrildidae)

2011 ◽  
Vol 152 (3) ◽  
pp. 769-780 ◽  
Author(s):  
Darius Stiels ◽  
Kathrin Schidelko ◽  
Jan O. Engler ◽  
Renate van den Elzen ◽  
Dennis Rödder
Keyword(s):  
Potential Distribution ◽  
Common Waxbill

Niche expansion of the common waxbill (Estrilda astrild) in its non-native range in Brazil

2018 ◽  
Vol 20 (9) ◽  
pp. 2635-2646 ◽  
Author(s):  
José Maria Cardoso da Silva ◽  
Manuella Andrade de Souza ◽  
Vivian Ribeiro ◽  
Ricardo B. Machado
Keyword(s):  
Native Range ◽  
Niche Expansion ◽  
The Common ◽  
Common Waxbill

scholarly journals Using survival regression to study patterns of expansion of invasive species: will the common waxbill expand with global warming?

Ecography ◽  
2009 ◽  
Vol 32 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Luís Reino ◽  
Jordi Moya-Laraño ◽  
António Cláudio Heitor
Keyword(s):  
Invasive Species ◽  
Global Warming ◽  
The Common ◽  
Common Waxbill ◽  
Survival Regression

scholarly journals Ecological effects on female bill colour explain plastic sexual dichromatism in a mutually-ornamented bird

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rita Freitas ◽  
Cristiana Marques ◽  
Gonçalo C. Cardoso ◽  
Sandra Trigo
Keyword(s):  
Sex Differences ◽  
Vitamin E ◽  
Sexual Dichromatism ◽  
Social Functions ◽  
Reproductive Ability ◽  
Winter Cold ◽  
Female Investment ◽  
Colour Saturation ◽  
The Stability ◽  
Common Waxbill

AbstractSex differences in ornamentation are common and, in species with conventional sex roles, are generally thought of as stable, due to stronger sexual selection on males. Yet, especially in gregarious species, ornaments can also have non-sexual social functions, raising the possibility that observed sex differences in ornamentation are plastic. For example, females may invest in costly ornamentation more plastically, to protect body and reproductive ability in more adverse ecological conditions. We tested this hypothesis with experimental work on the mutually-ornamented common waxbill (Estrilda astrild), supplementing their diets either with pigmentary (lutein, a carotenoid) or non-pigmentary (vitamin E) antioxidants, or alleviating winter cold temperature. We found that both lutein and vitamin E supplementation increased red bill colour saturation in females, reaching the same mean saturation as males, which supports the hypothesis that female bill colour is more sensitive to environmental or physiological conditions. The effect of vitamin E, a non-pigment antioxidant, suggests that carotenoids were released from their antioxidant functions. Alleviating winter cold did not increase bill colour saturation in either sex, but increased the stability of female bill colour over time, suggesting that female investment in bill colour is sensitive to cold-mediated stress. Together, results show that waxbill bill sexual dichromatism is not stable. Instead, sexual dichromatism can be modulated, and even disappear completely, due to ecology-mediated plastic adjustments in female bill colour.

scholarly journals Ecological Effects on Female Bill Color Explain Plastic Sexual Dichromatism in A Mutually-Ornamented Bird

2021 ◽  
Author(s):  
Rita Freitas ◽  
Cristiana Marques ◽  
Gonçalo C. Cardoso ◽  
Sandra Trigo
Keyword(s):  
Sex Differences ◽  
Vitamin E ◽  
Sexual Dichromatism ◽  
Social Functions ◽  
Reproductive Ability ◽  
Winter Cold ◽  
Female Investment ◽  
Colour Saturation ◽  
The Stability ◽  
Common Waxbill

Abstract Sex differences in ornamentation are common and, in species with conventional sex roles, are generally thought of as fixed, due to stronger sexual selection on males. Yet, especially in gregarious species, ornaments can also have non-sexual social functions, raising the possibility that observed sex differences in ornamentation are not fixed. For example, females may invest in costly ornamentation more plastically, to protect body and reproductive ability in more adverse ecological conditions. We tested this hypothesis with experimental work on the mutually-ornamented common waxbill (Estrilda astrild), supplementing their diets either with pigment (lutein, a carotenoid) or non-pigment (vitamin E) antioxidants, or alleviating winter cold temperature. We found that both lutein and vitamin E supplementation increased red bill colour saturation in females, reaching the same mean saturation as males, which supports the hypothesis that female bill colour is more sensitive to environmental or physiological conditions. The effect of vitamin E, a non-pigment antioxidant, suggests that carotenoids were released from their antioxidant functions. Alleviating winter cold did not increase bill color saturation in either sex, but increased the stability of female bill color over time, suggesting that female investment in bill color is sensitive to cold-mediated stress. Together, results show that waxbill bill sexual dichromatism is not fixed. Instead, sexual dichromatism can be modulated, and even disappear completely, due to ecology-mediated plastic adjustments in female bill color.

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