Explore pastoral Sauvie Island, where great blue herons launch themselves heavily into flight. Take secret pleasure in Marshall Park, a glittering tree-covered treasure hidden between busy urban thoroughfares. These pockets of wilderness, and many others like them, aid your escape from the urban bustle. In Nature Walks In & Around Portland, long-time local park explorers Karen and Terry Whitehill present 37 of their favourite nature walks, ranging...