Winker Kevin (36 results)

paperback. Condition: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority!

Pamphlet. Condition: Very Good. Vol 73, No 1, pp. 62-69, Illus, Extracted from orig vol, Begins with title page, trimmed & stapled, thus is like a pamphlet, VG.

Pamphlet. Condition: Very Good. Vol 109, pp. 853-862, Illus, Extracted from orig vol, Begins with title page, trimmed & stapled, thus is like a pamphlet, VG.

Pamphlet. Condition: Very Good. Vol 123, No 4, pp. 1052-1068, Illus, Extracted from orig vol, begins with title page, stapled & trimmed, thus is like a pamphlet, VG.

Paperback. Condition: New. On the Origin of Species Through Heteropatric Differentiation: A Review and a Model of Speciation in Migratory Animals. Ornithological Monographs No. 69.

Soft cover. Condition: Near Fine.

Paperback. Condition: Good. Good - Bumped and creased book with tears to the extremities, but not affecting the text block, may have remainder mark or previous owner's name - GOOD Standard-sized.

Pamphlet. Condition: Very Good. Vol 109, No 4, pp. 853-862, Extracted from orig vol, thus begins with title page, trimmed & stapled pamphlet, else VG.

Pamphlet. Condition: Very Good. Vol 122 , No 2, pp. 544-557, Extracted from orig vol, begins with title page, trimmed & stapled, thus is like a pamphlet else VG.

Pamphlet. Condition: Very Good. 1st Edition. Vol 125, No 2, pp. 461-472, Maps, Illus, 4to, Extracted from orig vol, begins with title page, stapled & trimmed, thus is like a pamphlet, VG.

Pamphlet. Condition: Very Good. Vol 104, No 4, pp. 580-598, Illus, Extracted from Orig Vol, begins with title page, trimmed & stapled, thus is like a pamphlet, VG.

Pamphlet. Condition: Very Good. Vol 107, No 1, pp. 26-39, Extracted from orig vol, begins with title page, trimmed & stapled, thus is like a pamphlet, last page in facsimile, else VG.

Paperback. Condition: New. On the Origin of Species Through Heteropatric Differentiation: A Review and a Model of Speciation in Migratory Animals. Ornithological Monographs No. 69. Abstract: Differentiation and speciation without extended isolation appear to be common among migratory animals. Historical oversight of this is probably due to temporal distortion in distribution maps and a tendency to consider that lineages had different historical traits, such as being sedentary or much less mobile. Mobility among cyclic migrants makes population isolation difficult, and diminished levels of intraspecific differentiation occur in avian migrants (I term this Montgomery's rule). Nevertheless, many lineages have differentiated despite increased mobility and a high propensity for gene flow, conditions that speciation theory has not addressed adequately. Populations of seasonal migrants usually occur in allopatry and sympatry during a migratory cycle, and this distributional pattern (heteropatry) is the focus of a model empirically developed to explain differentiation in migratory lineages. Divergence arises through disruptive selection from resource competition and heterogeneously distributed cyclic resources. Heteropatric speciation is a type of ecological speciation in which reproductive isolation increases between populations as a byproduct of adaptation to different environments that enhances breeding allopatry and allochrony despite degrees of sympatry that occur during the nonbreeding period in migration cycles. Mating or pair bonding in nonbreeding areas is rare. Patterns such as leapfrog migration and limited morphological divergence suggest that differentiation is driven by these ecological factors rather than by sexual selection or nontemporal changes in the resource base itself, although the additional presence of either of the latter would have additive divergent effects. Migratory lineages provide a largely neglected series of natural experiments in speciation in which to test predictions stemming from this model and others focusing on ecological speciation.

Condition: New.

Condition: New.

Condition: As New. Unread book in perfect condition.

Paperback. Condition: New. Throughout the twentieth century, pioneering biological field work was conducted from Mexico through Panama by such giants in the field as Miguel Alvarez del Toro, Charles Sibley, John T. Emlen Jr., and many others. But the written reports and scientific papers detailing their discoveries leave out the adventure, sense of discovery, and unexpected humour of their time in the field. Moments of Discovery collects twenty autobiographical descriptions of the incongruous situations, captivating people and places, and the inevitable trials and tribulations that surround some of the greatest biological discoveries in Mexico and Central America from the 1930s through the 1990s. The anthology allows the entertaining and illuminating events that have mostly lived in oral history to be read and enjoyed by a broad audience. A significant contribution to the history of biological exploration, this book is a must-read for anyone considering biological field work in the region--or the amateur, armchair fieldworker who wonders what those trips were really like.

hardcover. Condition: Very Good. Hardcover. Bound in red cloth with golden lettering across cover and along spine. White sticker with ISBN on back cover. Clean with minimal wear. Binding is tight and secure. Pages are clean, crisp, and bright. Printed in B&W with photographs featured throughout. 401 pages. University Press of Florida. Copyright page dated 2010. A very good copy. We ship everyday from a real neighborhood bookstore. This description is written by an actual person, who is holding the book in front of them to make sure it?s properly described. Please contact us with questions or if you would like to see photographs.

Paperback. Condition: New. Throughout the twentieth century, pioneering biological field work was conducted from Mexico through Panama by such giants in the field as Miguel Alvarez del Toro, Charles Sibley, John T. Emlen Jr., and many others. But the written reports and scientific papers detailing their discoveries leave out the adventure, sense of discovery, and unexpected humour of their time in the field. Moments of Discovery collects twenty autobiographical descriptions of the incongruous situations, captivating people and places, and the inevitable trials and tribulations that surround some of the greatest biological discoveries in Mexico and Central America from the 1930s through the 1990s. The anthology allows the entertaining and illuminating events that have mostly lived in oral history to be read and enjoyed by a broad audience. A significant contribution to the history of biological exploration, this book is a must-read for anyone considering biological field work in the region--or the amateur, armchair fieldworker who wonders what those trips were really like.

Paperback. Condition: New.

Paperback or Softback. Condition: New. Moments of Discovery: Natural History Narratives from Mexico and Central America. Book.

Red Cloth. Condition: Very Good Plus. Dust Jacket Condition: No DJ. First Edition. 401 pages. Size: 8vo.

Condition: New.

Condition: As New. Unread book in perfect condition.

Paperback. Condition: Brand New. 401 pages. 9.00x6.00x1.00 inches. In Stock.

paperback. Condition: New. In shrink wrap. Looks like an interesting title!

Paperback. Condition: New. Throughout the twentieth century, pioneering biological field work was conducted from Mexico through Panama by such giants in the field as Miguel Alvarez del Toro, Charles Sibley, John T. Emlen Jr., and many others. But the written reports and scientific papers detailing their discoveries leave out the adventure, sense of discovery, and unexpected humour of their time in the field. Moments of Discovery collects twenty autobiographical descriptions of the incongruous situations, captivating people and places, and the inevitable trials and tribulations that surround some of the greatest biological discoveries in Mexico and Central America from the 1930s through the 1990s. The anthology allows the entertaining and illuminating events that have mostly lived in oral history to be read and enjoyed by a broad audience. A significant contribution to the history of biological exploration, this book is a must-read for anyone considering biological field work in the region--or the amateur, armchair fieldworker who wonders what those trips were really like.

Rústica. Condition: New. Dust Jacket Condition: Nuevo. ERRITZOE, JOHANNES (illustrator). 01. Una obra de referencia básica para ornitólogos aficionados y profesionales. Escrita de manera clara y comprensible, las definiciones son concisas a la vez que rigurosas. Su formato fácilmente manejable y la impresionante cantidad de entradas que incluye -. LIBRO.

Taschenbuch. Condition: Neu. Neuware - Throughout the twentieth century, pioneering biological field work was conducted from Mexico through Panama by such giants in the field as Miguel Alvarez del Toro, Charles Sibley, John T. Emlen Jr., and many others. But the written reports and scientific papers detailing their discoveries leave out the adventure, sense of discovery, and unexpected humour of their time in the field. Moments of Discovery collects twenty autobiographical descriptions of the incongruous situations, captivating people and places, and the inevitable trials and tribulations that surround some of the greatest biological discoveries in Mexico and Central America from the 1930s through the 1990s. The anthology allows the entertaining and illuminating events that have mostly lived in oral history to be read and enjoyed by a broad audience. A significant contribution to the history of biological exploration, this book is a must-read for anyone considering biological field work in the region--or the amateur, armchair fieldworker who wonders what those trips were really like.

Paperback. Condition: New. Throughout the twentieth century, pioneering biological field work was conducted from Mexico through Panama by such giants in the field as Miguel Alvarez del Toro, Charles Sibley, John T. Emlen Jr., and many others. But the written reports and scientific papers detailing their discoveries leave out the adventure, sense of discovery, and unexpected humour of their time in the field. Moments of Discovery collects twenty autobiographical descriptions of the incongruous situations, captivating people and places, and the inevitable trials and tribulations that surround some of the greatest biological discoveries in Mexico and Central America from the 1930s through the 1990s. The anthology allows the entertaining and illuminating events that have mostly lived in oral history to be read and enjoyed by a broad audience. A significant contribution to the history of biological exploration, this book is a must-read for anyone considering biological field work in the region--or the amateur, armchair fieldworker who wonders what those trips were really like.