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One classic example of Goethe's principle of compensation are the galliformes. The luxurious splendour of the males’ plumage, for example the capercaillie, golden pheasant and peacock, has to be… Read More

Each year, some 50 billion migratory birds fly from their breeding grounds to their winter quarters, some of these being far away. Today, we know both the flyways taken by many types of bird and… Read More

The constructions of bower birds — remarks on the principle of compensation

The bowerbirds of New Guinea and Australia build laborious bowers and decorate the courtship sites around them.… Read More

The three bird families, weavers, viduids (whydahs/indigobirds) and estrildids (waxbills), which today are classified separately, during the last century were regarded, often taxonomically… Read More

From symbiosis to brood parasitism Part I: From the life of the cuckoo

Using the cuckoo family as an example, this article shows that likening the cuckoo to a brood parasite is not… Read More

It has long been regarded as unscientific to consider the musical aspects of territorial behaviour among songbirds. The musical abilities of song birds, for example their perception of melody and… Read More