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18Habitat and BiologyCocks go traveling...The Great Bustards on Russian territory are almostexclusively migratory birds. Even the Spanish bustards,especially the cocks, change their territoryregularly between brood and wintering areas witha distance between them of up to 250 kilometers.In contrast, the Central European Great Bustardsare significantly less mobile. Under normalcircumstances they go no further than 15 to 25kilometers from their brooding ground outside ofthe breeding season.Other migrations are undertaken primarily by thecocks that haven’t yet reached reproductive age– less frequently by hens. These “excursions” cancover hundreds of kilometers in all directions.Earlier the birds would have met other membersof their species who they could join. The fact thatthe migrations often “come to nothing” thesedays reduces the survival chances of the “bachelors.”Migrating great bustards also collide withoverhead powerlines; the risk of collision with windturbines has so far not been estimated.
Habitat and Biology19Severe winters causegreat loss amongthe bustards – afterthe 1978/89 wintermigration as well ashigh losses amongthe remaining birdsreduced the populationin Germany by45 percent....Flight from hard wintersOnly in winters with heavy snows do the localbirds stray far from their brooding grounds, flyingwestward and sometimes even making an appearancein France. Escaping the winter in this way, ashappened in the winters of 2009/10 and 2010/11after almost a twenty-year break, always resultin losses. In the mild winters before 2009 thebustards remained “at home”. During times ofsnow it is possible to help the bird by clearing rapeseed fields, their preferred winter feeding ground.It is possible that great bustards will be among thelong-term winners of global warming, at least inCentral Europe.Models of Great Bustard and climate data predictthat the bustards could benefit from climatechange in East Germany more than in any otherarea in Central Europe. But what is decisive is thetype of land use under these new climate conditions.The international responsibility of Germanyto protect this species is therefore all the greater.Did you know...Great Bustards arepowerful and indefatigablefliers in spiteof their weight? Whilein Central Europethey primarily live assedentary birds, inRussia they are migratorybirds that migratecirca 1,000 kilometersto their winter quartersin Ukraine.
Page 1: Species and Biotope ConservationThe
Page 4 and 5: 2 The Great Bustard - the Brandenbu
Page 6: 4 The Great Bustard - the Brandenbu
Page 9 and 10: Habitat and Biology7...today on fie
Page 11 and 12: Habitat and Biology9...a rare birdT
Page 13 and 14: Habitat and Biology11100 cm75 cm50
Page 15 and 16: Habitat and Biology13The courtship
Page 17 and 18: Habitat and Biology15Did you know..
Page 19: Habitat and Biology17Annual Cycle o
Page 23 and 24: Conservation21...international resp
Page 25: Conservation23The conservation of t
Page 29 and 30: Conservation27The artificial henLar
Page 31 and 32: Conservation 29Fosterlings in needO
Page 33 and 34: Conservation 31Great Bustard in Con
Page 35 and 36: Conservation 33Compensation and mit
Page 37 and 38: Conservation 35With understanding a
Page 39 and 40: Conservation 3716014012010080rescue
Page 41 and 42: Observation39For the viewer it is a
Page 43 and 44: State Bird Conservation Centre41Fro
Page 45 and 46: State Bird Conservation Centre43In
Page 47 and 48: Information45National and internati
Page 49 and 50: Information47Internet ResourcesAddr
Page 52: Ministry for Environment, Health,an

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