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magpie
Role of magpie in bird community formation in secondary forest
      
We analyzed a bird community in a secondary forest and the results show that the magpie was one of the key groups in the secondary forest.
      
Karyotypes were studied in the hooded and carrion crows, their naturally occurred hybrids, the jungle crow, the azure-winged magpie (2n= 80 in all aforementioned birds), and the magpie (2n= 82).
      
In the jungle crow, the azure-winged magpie, and the magpie, bright QH-bands and numerous G-bands were detected on Mchs and on some microchromosomes only.
      
Active Ag-NOR-bands were detected on one macrochromosome pair in the magpie.
      
EFFECT OF GREAT SPOTTED CUCKOO PRESENCE ON MAGPIE REJECTION BEHAVIOUR
      
Thus, we conclude that the presence of a great spotted cuckoo near the magpie nest does not increase the probability of egg rejection.
      
Male and female magpie-lark pairs did not split up and attack one 'intruder' each when presented with a stereo duet playback.
      
Convergent vocal strategies of males and females are consistent with a cooperative function of duetting in Australian magpie-lar
      
Australian magpie-larks (Grallina cyanoleuca) produce antiphonal duets that function primarily in cooperative territorial defence.
      
Male and female magpie-larks both initiate duets, and both sexes also frequently sing alone.
      
The role of duet repertoires and temporal precision in intra- and inter-pair interactions is poorly understood in magpie-larks and other duetting species, and requires further investigation.
      
The Australian magpie (Gymnorhina tibicen), however, often attacks other species; the reasons for attacks are largely unknown.
      
We subjected eight Australian magpie groups to simulated territorial intrusions.
      
In contrast, Australian magpie decoys were often approached and attacked by residents.
      
Offspring reproductive value and nest defense in the magpie (Pica pica)
      
Magpie (Pica pica) brood defense against a human at the nest was studied in a Mediterranean population with low renesting potential.
      
Magpie parents increased defense intensity in response to premature escaping by almost fully-developed nestlings.
      
Here we describe how the ejection rate of eggs of an obligate brood parasite, the great spotted cuckoo Clamator glandarius, by its host, the magpie Pica pica, has recently increased in an area in southern Spain.
      
The ejection rate of great spotted cuckoo eggs in naturally parasitized nests of the magpie increased at a rate of 0.5% year' during the period 1982-1992.
      
 

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