Kategoria BISAC: Nature >> Animals - Birds

At the start of the nineteenth century, Passenger Pigeons were perhaps the most abundant birds on the planet, numbering literally in the billions. The flocks were so large and so dense that they blackened the skies, even blotting out the sun for days at a stretch. Yet by the end of the century, the most common bird in North America had vanished from the wild. In 1914, the last known representative of her species, Martha, died in a cage at the Cincinnati Zoo.

This stunningly illustrated book tells the astonishing story of North America's Passenger Pigeon, a bird species that--like...

Why do ravens, generally understood to be solitary creatures, share food between each other during winter? On the surface, there didn't appear to be any biological or evolutionary imperative behind the raven's willingness to share. The more Bernd Heinrich observed their habits, the more odd the bird's behavior became. What started as mere curiosity turned into an impassioned research project, and Ravens In Winter, the first research of its kind, explores the fascinating...

This is the one compact, portable, and user-friendly field guide the novice or experienced birder needs to identify birds in the field in the diverse habitats found in Costa Rica. It features descriptions and illustrations of all 903 species definitely known from Costa Rica, including pelagics and species regular to Cocos Island. Fifty-six of these species are placed in a "Rarities" section that includes accidentals, rarer pelagics, and species that have not been reported in more than twenty years.

The detailed full-color illustrations show identifying features including plumage...

One of the most amazing and accessible wildlife-watching destinations on earth, the "Top End" of Australia's Northern Territory is home to incredible birds and animals--from gaudy Red-collared Lorikeets to sinister Estuarine Crocodiles and raucous Black Flying-foxes. With this lavishly illustrated photographic field guide, you will be able to identify the most common creatures and learn about their fascinating biology--from how Agile Wallaby mothers can pause their pregnancies to why Giant Frogs spend half the year buried underground in waterproof cocoons.

The Top End stretches from...