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Nest sanitation behavior in hirundines as a pre-adaptation to egg rejection to counter brood parasitism
TLDR
The results showed that nest cleaning behavior could have evolved into a means of reducing the costs of brood parasitism, suggesting that egg recognition ability has evolved from recognition of non-egg-shaped objects.
View on Springer
Avoiding parasitism by breeding indoors: cuckoo parasitism of hirundines and rejection of eggs
TLDR
These findings suggest that barn swallows in China have gained egg rejection behavior because they cannot avoid parasitism when breeding outdoors, and that avoidance of cuckoo parasitism can be achieved by breeding indoors.
View on Springer
Nest sanitation elicits egg discrimination in cuckoo hosts
TLDR
Evidence is provided for nest sanitation being a preadaptation to egg discrimination by facilitating egg rejection, thereby significantly advancing the understanding of avian cognition of foreign objects and suggesting that egg discrimination behavior in many accepters and intermediate rejecters may be lost or diluted.
View on Springer
Breeding biology of the golden parrotbill (Paradoxornis verreauxi) (Aves: Timaliidae) in southwestern China
TLDR
The golden parrotbill nests were specialized, pensile, semi-domed, attached to bamboo branches and constructed from leaves, fibrous roots and moss by both male and female birds.
View on Taylor & Francis
Modeling the cuckoo’s brood parasitic behavior in the presence of egg polymorphism
TLDR
A time sequence of parasitic events in which a cuckoo finds host nests and decides to parasitize them or not in the presence of egg polymorphism is modeled and it is shown that either of the two strategies can be optimal.
View on Springer
Ancient origin and maternal inheritance of blue cuckoo eggs
TLDR
A mitochondrial phylogeny suggests that blue eggs originated in Asia and then expanded westwards as female cuckoos laying blue eggs interbred with the existing European population, introducing an adaptive trait that expanded the range of potential hosts.
View on PubMed
Deficiency in egg rejection in a host species as a response to the absence of brood parasitism
TLDR
This study provides strong evidence that egg-rejection ability can be dramatically deficient in host populations without brood parasitism compared to parasitized ones and enhances the understanding of changes in egg- rejection behavior in birds without the selection pressure of brood Parasitism for an extended period of time.
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Extreme levels of hunting of birds in a remote village of Hainan Island, China
Summary In China, many bird species are generally thought to be threatened mainly, or at least partly, by hunting. However, there have been few studies of bird hunting at a local scale. Bird hunting…
View on Cambridge Press
Egg color variation, but not egg rejection behavior, changes in a cuckoo host breeding in the absence of brood parasitism
TLDR
It is found that egg rejection ability was equally strong in both the native and the introduced populations, but levels of interclutch variation and intraclutch consistency in egg color in the native population were higher than in the introduced population.
View on PubMed
Are Cuckoos Maximizing Egg Mimicry by Selecting Host Individuals with Better Matching Egg Phenotypes?
TLDR
It is argued that the existence of an ability to select host nests to maximize mimicry by brood parasites appears unlikely, but this possibility should be further explored in cuckoo-host systems where the host has evolved discrete egg phenotypes.
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