To determine the mechanisms for species-spacing in a group of closely related bird species--namely, five species of Neotropical Kingfishers--the author studied their feeding behavior and diet at three sites, two in Bolivia and one in Colombia. He found that changes in number of coexisting species were correlated with changes in abundance and size distribution of their prey, surface-dwelling fishes.
The Fourth Edition of the Howard and Moore Checklist of the Birds of the World will be published in two volumes: Volume 1 - Non-passerines and Volume 2 - Passerines. This is a new edition of a major reference work and most respected scientific checklist of birds of the world. It has been updated to reflect the considerable change in our understanding of the evolution of birds derived from the study of their DNA over the past decade; thus the Cracraft sequence adopted in 2003 is completely revised here.The new edition also reflects revisions to species and subspecies. Evaluation, as before, is based on the Biological Species Concept, carefully and conservatively applied. Range statements have been revised, particularly for the Americas. Overall the number of footnotes and references cited about doubles.
To determine the mechanisms for species-spacing in a group of closely related bird species--namely, five species of Neotropical Kingfishers--the author studied their feeding behavior and diet at three sites, two in Bolivia and one in Colombia. He found that changes in number of coexisting species were correlated with changes in abundance and size distribution of their prey, surface-dwelling fishes.
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.