Aves

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Owls are enduringly popular birds, but due to their nocturnal habits most species are difficult to see well. The plumages of many species are cryptic and difficult to separate by plumage alone. This problem is compounded by the different morphs that many adopt. This book fully d…

The phenomenon of bird migration has fascinated people from time immemorial. The arrivals and departures of different species marked the seasons, heralding spring and autumn, and providing a reliable calendar long before anything better became available.

The phenomenon of bird migration has fascinated people from time immemorial. The arrivals and departures of different species marked the seasons, heralding spring and autumn, and providing a reliable calendar long before anything better became available.

The pigeon is the quintessential city bird. Domesticated thousands of years ago as a messenger and a source of food, its presence on our sidewalks is so common that people consider the bird a nuisance—if they notice it at all. Yet pigeons are also kept for pleasure, sport, and p…

Most people who have taken a biology course in the past 50 years are familiar with the work of David Lack, but few remember his name. Almost all general biology texts produced during that period have a figure showing the beak size differences among the finches of the Galapagos I…

Climmers and collectors -- Making shells -- The shape of eggs -- Colouring eggs : how? -- Colouring eggs : why? -- Much ado about albumen : the microbe war -- Yolk, ovaries and fertilisation -- Stupendious love : laying, incubation and hatching -- Epilogue : Lupton's legacy. Re…