The Cuckoo

@article{PTheC,
  title={The Cuckoo},
  author={E. W. P.},
  journal={Nature},
  volume={44},
  pages={223-223}
}
I DO not know if the hibernating of swallows and other summer visitors is still a debated question or not, but the following account of a cuckoo may be of interest to some of your readers. 
Inter-specific brood parasitism and the evolution of avian reproductive strategies
I was supported by the Spanish Ministry of Economy and Competitiveness during the redaction of this manuscript (Projects CGL2014‐56769‐P).
Cuckoo tricks with eggs and chicks
TLDR
Experiments reveal how the cuckoo chick’s extraordinary begging calls ‘manipulate’ the hosts into treating it as if it were a whole brood of their own hungry young.
Can Skylarks Alauda arvensis Discriminate a Parasite Nestling? Possible Case of Nestling Cuckoo Cuculus canorus Ejection by Its Host Parents
TLDR
This report describes an observation of a Skylark Alauda arvensis pair that probably ejected a young Cuckoo and subsequently raised their own offspring, the only case of Cuckoos detected among 348 Skylarks nests in the study area in the northern Netherlands.
Disappearance of eggs from nonparasitized nests of brood parasite hosts: the evolutionary equilibrium hypothesis revisited
TLDR
This work aims to demonstrate the efforts towards in-situ applicability of EMMARM, which aims to provide real-time information about the concrete mechanical properties of EMTs and their applications in the oil and gas industry.
INDIVIDUAL LAYING HISTORIES AND THE CLUTCH AND NUMBERS OF EGGS OF PARASITIC CUCKOOS SIZE
TLDR
The unreliability of some reports on the number of eggs laid by parasitic cuckoos is due to the use of collections of eggs that did not contain either random samples of those of locally nesting birds, or eggs that were properly identified to species in areas where several species of parasitic Cuckoos coexist.
Behaviour of female common cuckoos, Cuculus canorus, in the vicinity of host nests before and during egg laying: a radiotelemetry study
TLDR
There was significant variation in behaviour between cuckoos, particularly in the time of day when eggs were laid in host nests, and this variation can be attributed to the strong, but not absolute, host and habitat specificity of individuals.
Vocal behaviour of the Common Koel, Eudynamys scolopacea, and implications for mating systems
TLDR
It is speculated that the Koel shares with other cuckoos a basic breeding pattern based on male dominance interactions that lead to polygyny but that the discovery of duetting strongly suggests the possibility of short-term pair-bonding within this mating system.
Brood parasitism by Horsfield's Bronze-Cuckoo in a fragmented agricultural landscape in Western Australia
TLDR
Parasitism by Horsfield's Bronze-Cuckoos did not appear to have a negative effect on the persistence of their major host, the Blue-breasted Fairy-wren, Malurus pulcherrimus, in this area.
AN EXPERIMENTAL STUDY OF CO-EVOLUTION BETWEEN THE CUCKOO, CUCULUS CANORUS, AND ITS HOSTS. I. HOST EGG DISCRIMINATION
TLDR
Three results suggest that the egg discrimination by suitable hosts has evolved in response to cuckoo parasitism, and Species unsuitable as hosts mainly showed little if any rejection of model eggs unlike their own.
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