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Breeding performance and nest-site selection of Woodchat Shrikes Lanius senator near the southern edge of their breeding distribution
Numerous Woodchat Shrike ( Lanius senator ) populations, and Laniidae in general, are globally declining. A deeper understanding of their breeding...
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Cowards or clever guys: an alternative nest defence strategy employed by shrikes against magpies
Red-backed shrikes ( Lanius collurio ) show a substantial variability in their nest defence behaviour, which usually follows the rules of optimal...
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Brood survival in the Red-backed Shrike Lanius collurio in eastern Poland
Brood survival as an expression of breeding success is a component of bird fitness and the principal parameter underlying bird population dynamics....
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The Grey-backed Shrike parents adopt brood survival strategy in both the egg and nestling phases
BackgroundGreat diversity exists in the parenting pattern of altricial birds, which has long been considered as an adaptive response to specific...
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A kestrel without hooked beak and talons is not a kestrel for the red-backed shrike (Lanius collurio)
Birds are strongly motivated to recognize various predators to secure survival and reproductive success. Thus, predator recognition provides a useful...
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Does experimentally simulated presence of a common cuckoo (Cuculus canorus) affect egg rejection and breeding success in the red-backed shrike (Lanius collurio)?
Providing artificial eggs is a commonly used technique to understand brood parasitism, mainly by the common cuckoo ( Cuculus canorus ). However, the...
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Male parent birds exert more effort to reproduce in two desert passerines
BackgroundParental investment by birds is limited by the habitat environment, and a male parent increases its effort to reproduce in birds that live...
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Non-breeding sites, loop migration and flight activity patterns over the annual cycle in the Lesser Grey Shrike Lanius minor from a north-western edge of its range
The Lesser Grey Shrike is a typical Palaearctic songbird for which we have limited knowledge of its migration ecology. All that is known about its...
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Activity patterns throughout the annual cycle in a long-distance migratory songbird, the red-backed shrike Lanius collurio
BackgroundLong-distance migratory birds undergo complex annual cycles during which they must adjust their behaviour according to the needs and...
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Ophthalmology of Passeriformes
Passerines comprise over 50% of the known avian species on Earth, with over 6000 species in greater than 110 families distributed worldwide except...
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Online repositories of photographs and videos provide insights into the evolution of skilled hindlimb movements in birds
The ability to manipulate objects with limbs has evolved repeatedly among land tetrapods. Several selective forces have been proposed to explain the...
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Breeding biology of a relictual Maghreb Magpie (Pica mauritanica) population in Tunisia
BackgroundThe Maghreb Magpie ( Pica mauritanica ) is an endemic North African species. Available knowledge on this species is limited to historic...
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Object categorization by wild-ranging birds in nest defence
Despite object categorization being an important ability for the survival of wild animals, the principles behind this ability have been only scarcely...
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Environmental colour pattern variation in Mediterranean Podarcis
BackgroundLizards of the genus Podarcis are widespread in the Mediterranean region, including islands and island archipelagos. These small-bodied...
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Patterns of parent-absent begging in European Starling (Sturnus vulgaris) nestlings
Parent–offspring communication mediates parental provisioning rates through nestling begging. Although begging can be energetically costly and it...
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Moult, sex and food are the most important factors regulated the timing of migration of north Asian Passerines
Bird migration is a highly complex, regulated process, of which timing is an essential element. The timing of migration is influenced by moult, age,...
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Do males pay more? A male-biased predation of common lizard (Zootoca vivipara) by great grey shrike (Lanius excubitor)
Predation is one of the most important factors affecting biology, ecology and behaviour of the prey. We have studied predation of the common lizard ( Z...
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Seasonal bird diversity of an urban lake with the history of eutrophication and restoration
Long-term biodiversity monitoring studies of restored wetland ecosystems are essential for successful conservation. We studied the bird diversity of...
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Diet of Mesozoic toothed birds (Longipterygidae) inferred from quantitative analysis of extant avian diet proxies
BackgroundBirds are key indicator species in extant ecosystems, and thus we would expect extinct birds to provide insights into the nature of ancient...
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Current Status of the Bird Life of Pakistan
Birds occupy almost every part of the earth as indispensable components of the global living diversity. They play a significant role in ensuring the...