Before modern binoculars and cameras made it possible to observe birds closely in the wild, many people collected eggs as a way of learning about birds. Serious collectors called their avocation "oology" and kept meticulous records for each set of eggs: the bird's name, the species reference number, the quantity of eggs in the clutch, the date and location where the eggs were collected, and the collector's name. These documented egg collections, which typically date from the nineteenth and early twentieth centuries, now provide an important baseline from which to measure changes in the numbers, distribution, and nesting patterns of many species of birds.
In Oology and Ralph's Talking Eggs, Carrol L. Henderson uses the vast egg collection of Ralph Handsaker, an Iowa farmer, as the starting point for a fascinating account of oology and its role in the origins of modern birdwatching, scientific ornithology, and bird conservation in North America. Henderson describes Handsaker's and other oologists' collecting activities, which included not only gathering bird eggs in the wild but also trading and purchasing eggs from collectors around the world. Henderson then spotlights sixty of the nearly five hundred bird species represented in the Handsaker collection, using them to tell the story of how birds such as the Snowy Egret, Greater Prairie Chicken, Atlantic Puffin, and Wood Duck have fared over the past hundred years or so since their eggs were gathered. Photos of the eggs and historical drawings and photos of the birds illustrate each species account. Henderson also links these bird histories to major milestones in bird conservation and bird protection laws in North America from 1875 to the present.

Oology and Ralph's Talking Eggs: Bird Conservation Comes Out of Its Shell

Science & Math

Henderson, Carrol L.

Biological Sciences

University of Texas Press

At the biological crossroads of the Americas, Costa Rica hosts an astonishing array of plants and animals—over half a million species! Ecotourists, birders, and biologists come from around the world, drawn by the likelihood of seeing more than three or four hundred species of birds and other animals during even a short stay. To help all of these visitors, as well as local residents, identify and enjoy the wildlife of Costa Rica, Carrol Henderson published Field Guide to the Wildlife of Costa Rica in 2002, and it became the instant and indispensable guide.
Now Henderson has created a dedicated field guide to the birds that travelers are most likely to see, as well as to the unique or endemic species that are of high interest to birders. Birds of Costa Rica covers 310 birds—an increase of 124 species from the earlier volume—with fascinating accounts of the birds' natural history, identification, and behavior gleaned from Henderson's forty years of traveling and birding in Costa Rica. All of the accounts include beautiful photographs of the birds, most of which were taken in the wild by Henderson. There are new updated distribution maps and a detailed appendix that identifies many of the country's best bird-watching locations and lodges, including contact information for trip planning purposes.

Birds of Costa Rica: A Field Guide (Corrie Herring Hooks Series)

Nature & Ecology

At the biological crossroads of the Americas, Costa Rica hosts an astonishing array of plants and animals—over half a million species! Ecotourists, birders, and biologists come from around the world, drawn by the likelihood of seeing more than three or four hundred species of birds and other animals during even a short stay. To help all these visitors, as well as local residents, identify and enjoy the wildlife of Costa Rica, Carrol Henderson published Field Guide to the Wildlife of Costa Rica in 2002, and it instantly became the indispensable guide.
Now Henderson has created a dedicated field guide to more than one hundred tropical butterflies, moths, and other invertebrates that travelers are most likely to see while exploring the wild lands of Costa Rica. He includes fascinating information on their natural history, ecology, identification, and behavior gleaned from his forty years of travels and wildlife viewing, as well as details on where to see these remarkable and beautiful creatures. The butterflies, moths, and other invertebrates are illustrated by over 180 stunning and colorful photographs—most of which were taken in the wild by Henderson. A detailed and invaluable appendix that identifies many of Costa Rica's best wildlife-watching destinations, lodges, and contact information for trip-planning purposes completes the volume.

Butterflies, Moths, and Other Invertebrates of Costa Rica: A Field Guide (Corrie Herring Hooks Series)

To help visitors, as well as local residents, identify and enjoy the wildlife of Costa Rica, Carrol L. Henderson published Field Guide to the Wildlife of Costa Rica in 2002, and it instantly became the indispensable guide. Now Henderson has created a field guide dedicated to the monkeys, sloths, treefrogs, lizards, crocodiles, and other animals that travelers are most likely to see while exploring the wild lands of Costa Rica. He includes fascinating information on their natural history, ecology, identification, and behavior gleaned from his forty years of travels, studies, and wildlife viewing in Costa Rica, as well as details on where to see these remarkable and beautiful creatures. The mammals, amphibians, and reptiles are illustrated by stunning and colorful photographs—most of which were taken in the wild by Henderson. A detailed and invaluable appendix that identifies many of Costa Rica's best wildlife-watching destinations, lodges, and contact information for trip-planning purposes completes the volume.

Mammals, Amphibians, and Reptiles of Costa Rica: A Field Guide (Corrie Herring Hooks Series)

Sports & Outdoors

At the biological crossroads of the Americas, Costa Rica hosts an astonishing array of plants and animals—over half a million species! Ecotourists, birders, and biologists come from around the world to immerse themselves in the country's unspoiled rain forests, mountains, and beaches, drawn by the likelihood of seeing more than three or four hundred species of birds and other animals during even a short stay. To help all of these visitors and local residents identify and enjoy the wildlife of Costa Rica, this field guide presents nearly three hundred species of birds, mammals, reptiles, amphibians, butterflies, moths, and other invertebrates. Carrol Henderson, an experienced wildlife biologist, traveler, and tour leader in Costa Rica, has chosen the species that ecotourists are most likely to see, along with a selection of rarer, sought-after animals. He gives a general introduction to each group of animals, followed by individual species accounts that highlight identification features and interesting ecological adaptations for survival. His stunning close-up photographs and distribution maps complete each entry. In addition, Henderson includes a wealth of data about Costa Rica's natural environment, as well as a trip preparation checklist and lists of conservation organizations, wildlife tourism sites, and wildlife vocalization tapes and CDs. With so much information so readily and readably accessible, this field guide will be essential for planning and enjoying your time in Costa Rica.

Field Guide to the Wildlife of Costa Rica (Corrie Herring Hooks Series)

At the biological crossroads of the Americas, Costa Rica hosts an astonishing array of plants and animals—over half a million species! Ecotourists, birders, and biologists come from around the world to immerse themselves in the country's unspoiled rain forests, mountains, and beaches, drawn by the likelihood of seeing more than three or four hundred species of birds and other animals during even a short stay. To help all of these visitors and local residents identify and enjoy the wildlife of Costa Rica, this field guide presents nearly three hundred species of birds, mammals, reptiles, amphibians, butterflies, moths, and other invertebrates. Carrol Henderson, an experienced wildlife biologist, traveler, and tour leader in Costa Rica, has chosen the species that ecotourists are most likely to see, along with a selection of rarer, sought-after animals. He gives a general introduction to each group of animals, followed by individual species accounts that highlight identification features and interesting ecological adaptations for survival. His stunning close-up photographs and distribution maps complete each entry. In addition, Henderson includes a wealth of data about Costa Rica's natural environment, as well as a trip preparation checklist and lists of conservation organizations, wildlife tourism sites, and wildlife vocalization tapes and CDs. With so much information so readily and readably accessible, this field guide will be essential for planning and enjoying your time in Costa Rica.

Field Guide to the Wildlife of Costa Rica

PP.144, Sm Quarto, Color Photos And Illustrations, Line Drawings, Charts

Landscaping for Wildlife

Diane Pub Co.

For everyone who enjoys attracting wildlife to their backyard, farm, woodlot, or lakeshore home, Woodworking for Wildlife is the perfect resource. With all the latest information on how to attract everything from bluebirds, chickadees, purple martins, and wood ducks to bumblebees, toads, owls, and woodpeckers, the book features thirty designs for nest boxes and nest platforms that will accommodate forty-six species of wildlife. It provides easy-to-follow diagrams for cutting out and assembling the nest boxes, accompanied by over three hundred beautiful color photographs.
Carrol L. Henderson has dramatically improved and expanded the book with the best techniques for building, placing, and managing nest boxes. He provides new information on how to eliminate predation on nest boxes by raccoons and cats, as well as how to reduce competition from exotic species such as house sparrows and starlings. The book also includes new designs for houses for flickers, great crested flycatchers, toads, bumblebees, buffleheads, and purple martins.
Woodworking for Wildlife is a great reference for backyard wildlife enthusiasts, conservationists, youth group leaders, teachers, woodworking instructors, and parents and grandparents who are looking for outdoor projects to do with children.

Woodworking for Wildlife: Homes for Birds and Mammals

Illustrated, Spiral Bound, PP.278, Color Photos, Figures, Plans

Wild about Birds: The Dnr Bird Feeding Guide

Crafts, Hobbies & Home

Pets & Animal Care

Minnesota's Bookstore

This book shows to plan and plant a diverse natural lakeshore landcape. Features information on how to restore wildlife habitat, wildflowers and clear water--preserve or restore the natural beauty that attracted you to lakeshore living in the first place. The principles and techniques in this book are also applicable for landscaping along rivers, streams and wetlands. Also features lakeshore rules and regulations for Minnesota, Wisconsin and Michigan.

Lakescaping for Wildlife & Water Quality

Gardening & Landscape Design

Minnesota Department of Natural Resources

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Books by Henderson, Carrol L.