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Gruidae – Planet of Birds

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Category: Gruidae

Why Cranes circle

One autumn day ages and ages ago, the cranes were preparing to go south. Cranes always dreaded the cold and flew away to the summer-land at the first glitter of the frost. The crane leader had a loud, hoarse voice, and he called and called to his flock to hurry. The cranes came from all […]

Female greater sandhill Crane continues to incubate affer the loss of her mate

Sandhill Crane (Grus canadensis) Science Article 1 abstract The reproductivep attern of a Greater Sandhill Crane (Grus canadensista tn’da)pair was disrupted in May 1976 when the male was shot and killed on Malheur NationalWildlife Refuge, Oregon. The female continued to incubate a remaining egg, and tendedthe chick near the nest through May. By early June […]

Population genetic structure in migratory sandhill cranesand the role of Pleistocene glaciations

Sandhill Crane (Grus canadensis) Science Article 2 abstract Previous studies of migratory sandhill cranes (Grus canadensis) have made significantprogress explaining evolution of this group at the species scale, but have been unsuccessfulin explaining the geographically partitioned variation in morphology seen on the populationscale. KENNETH L. JONES et al, Molecular Ecology (2005) 14 , 2645-2657 Download […]

Verhalten von Kranichfamilien (Grus grus) in BrutrevierenNordostdeutschlands: Investition der Altviigel in ihre Nachkommen

Crane (Grus grus) Science Article 1 abstract Juveniles and immature birds normally have less foraging ability and a lower food intake rate than adults. This-it has been presumed-is compensated for by parental care and investment during juvenile development. Studies of time budgets and parental investment of Common Cranes were carried out in the years 1995 […]

Daily activity and intake rate patterns of wintering Common Cranes

Crane (Grus grus) Science Article 2 abstract Daily activity patterns of wintering Common Cranes Grus grus were studied at Gallocanta, NE Spain, and related with changes in foraging site, distance to roost and flocking behavior. Per cent time spent feeding, feeding bout length, and food intake rate showed two peaks, in early morning and late […]

Nest site selection of the Eurasian Crane Grus grus in Estonia: an analysis of nest record cards

Crane (Grus grus) Science Article 3 abstract We describe in detail the nesting habitats of the Eurasian Crane in Estonia and explore relationships between different habitat characteristics and nesting success.We analysed all 161 reported Eurasian Crane nest finds in Estonia.We found that the cranes favorite nesting habitats are different types of mire (71%of all nests), […]

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