Hoopoes color their eggs with antimicrobial uropygial secretions

@article{Soler2014HoopoesCT,
  title={Hoopoes color their eggs with antimicrobial uropygial secretions},
  author={Juan Jos{\'e} Soler and Manuel Mart{\'i}n-Vivaldi and Juan Manuel Peralta‐S{\'a}nchez and Laura Rodriguez Arco and Natalia Ju{\'a}rez-Garc{\'i}a-Pelayo},
  journal={Naturwissenschaften},
  year={2014},
  volume={101},
  pages={697-705}
}
Uropygial gland secretions are used as cosmetics by some species of birds to color and enhance properties of feathers and teguments, which may signal individual quality. Uropygial secretions also reach eggshells during incubation and, therefore, may influence the coloration of birds’ eggs, a trait that has attracted the attention of evolutionary biologists for more than one century. The color of hoopoe eggs typically changes along incubation, from bluish-gray to greenish-brown. Here, we test… 
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
It is suggested that the cosmetic use of colored uropygial secretion might also play a role in parent-offspring communication, complementing or amplifying information provided by the flamboyant colored gapes and skin of nestlings.
Acquisition of Uropygial Gland Microbiome by Hoopoe Nestlings
TLDR
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Environmental Factors Shape the Community of Symbionts in the Hoopoe Uropygial Gland More than Genetic Factors
TLDR
H hoopoes are able to incorporate new symbionts from the environment during the development of the uropygium, which could be a selective advantage if strains with higher antimicrobial capacity are incorporated into the gland and could aid hosts in fighting against pathogenic and disease-causing microbes.
Preen oil and bird fitness: a critical review of the evidence
  • G. Moreno-Rueda
  • Biology
    Biological reviews of the Cambridge Philosophical Society
  • 2017
TLDR
The uropygial gland appears to have several non‐mutually exclusive functions in birds, and thus is likely to be subject to several selective pressures, and future studies should consider how the inevitable trade‐offs among different functions drive the evolution of uropyGial gland secretions.
Micro- and macroanatomical features of the uropygial gland of duck (Anas platyrhynchos) and pigeon (Columba livia)
TLDR
Morphometric and histological analysis of the uropygial gland of the duck and pigeon showed that the architecture is similar among birds; however, some species-specific differences suggest a functional correlation with the habitat.
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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