Northern Shrike (Lanius excubitor) Science Article 4 abstract On 25 May 2003, near the village Budy (Biebrza Marshes, East Poland), interspecific feedingof a Great Grey Shrike (Lanius excubitor) fledgling by adult Yellowhammers (Emberiza citrinella) wasobserved. R. Drozdz, M. Hromada and P. Tryjanowski, BIOLOGICAL LETT. 2004, 41(2): 185n187 Download article download full text (pdf)

Northern Shrike (Lanius excubitor) Science Article 5 abstract Great Grey Shrikes are usually territorial all the year round. However, flocks of up to 15 individuals have been observed on migration in Poland recently. On 3rd November 2001 in the morning, I observed a flock of 110 Great Grey Shrikes near ponds in Zimno (E Poland). […]

Northern Shrike (Lanius excubitor) Science Article 6 abstract The great grey shrike, Lanius excubitor, is known to be a raptor-like passerine. In addition to invertebrate prey, its diet also consists of vertebrates, including small birds. We examined the effect of presence of the great grey shrike on the breeding assemblages of small passerine birds in […]

Northern Shrike (Lanius excubitor) Science Article 8 abstract In studies on avian systematics and ecology, data from birds in museum collections are often used. Therefore, it is very important to test how representative such material is. However, museum specimens are usually handled, preserved and kept in different ways, which complicates the comparative use of measurements […]

Northern Shrike (Lanius excubitor) Science Article 2 abstract The aim of the study was to present variability in nest and breeding parameters of the Great Grey Shrike in Poland. We analyzed 83 nest record cards. Most data were recorded in 1982-2002. The analyzed parameters included: nest location, nest height, nest structure, breeding phenology, clutch size, […]

Northern Shrike (Lanius excubitor) Science Article 1 abstract Since the 1980s, the breeding range of the Great Grey Shrike in Austria has been restricted to the northern part of Lower Austria. Since 1995, this breeding population has been fully censused to obtain base-line population levels. Every breeding locality was examined 6-8 times each season. In […]

Northern Shrike (Lanius excubitor) Science Article 11 abstract The Great Grey Shrike Lanius excubitor, as well as other species of family Laniidae, recognise humans as potential predators and actively defend nests. During an intensive study in western Poland we examined the influence of observer visits on breeding success and breedingbehaviour of the Great Grey Shrike. […]