 National Geographic Field Guide to the Birds of North America, Fifth Edition Author: Jon L. Dunn Manufacturer: National Geographic ListPrice: $24.00 Offer: $16.32
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 The Sibley Field Guide to Birds of Eastern North America Author: David Allen Sibley Manufacturer: Knopf ListPrice: $19.95 Offer: $13.57
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 The Sibley Guide to Birds Author: David Allen Sibley Manufacturer: Knopf ListPrice: $35.00 Offer: $23.10
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 A Primer Of Ecological Statistics Author: Nicholas J. Gotelli Manufacturer: Sinauer Associates ListPrice: $41.95 Offer: $35.95
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 Manual of Ornithology: Avian Structure and Function Author: Noble S. Proctor Manufacturer: Yale University Press ListPrice: $32.50 Offer: $28.63
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 Landscape Ecology in Theory and Practice: Pattern and Process Author: Monica Turner Manufacturer: Springer ListPrice: $62.95 Offer: $44.86
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 Ornithology Author: Frank B. Gill Manufacturer: W. H. Freeman Offer: $97.40
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 Corridor Ecology: The Science and Practice of Linking Landscapes for Biodiversity Conservation Author: Jodi Hilty Manufacturer: Island Press ListPrice: $32.50 Offer: $21.13
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 Birds of Peru (Princeton Field Guides) Author: Thomas S. Schulenberg Manufacturer: Princeton University Press ListPrice: $49.50 Offer: $30.58
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 Handbook of Capture-Recapture Analysis Manufacturer: Princeton University Press ListPrice: $55.00 Offer: $37.80
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 The Singing Life of Birds: The Art and Science of Listening to Birdsong Author: Donald Kroodsma Manufacturer: Houghton Mifflin ListPrice: $16.95 Offer: $11.53
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 Analysis and Management of Animal Populations Author: Byron K. Williams Manufacturer: Academic Press ListPrice: $146.00 Offer: $116.80
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 Cornell Lab of Ornithology Handbook of Bird Biology Author: Cornell Laboratory of Ornithology Manufacturer: Princeton University Press ListPrice: $99.50 Offer: $79.60
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 The Singing Life of Birds: The Art and Science of Listening to Birdsong Author: Donald Kroodsma Manufacturer: Houghton Mifflin ListPrice: $28.00 Offer: $18.48
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 Sampling Rare or Elusive Species: Concepts, Designs, and Techniques for Estimating Population Parameters Manufacturer: Island Press ListPrice: $45.00 Offer: $36.00
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 Multivariate Statistics for Wildlife and Ecology Research Author: Kevin McGarigal Manufacturer: Springer ListPrice: $54.95 Offer: $39.86
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 Wildlife-Habitat Relationships: Concepts and Applications Author: Michael Morrison Manufacturer: Island Press ListPrice: $45.00 Offer: $27.00
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 Occupancy Estimation and Modeling: Inferring Patterns and Dynamics of Species Occurrence Author: Darryl I. MacKenzie Manufacturer: Academic Press ListPrice: $73.95 Offer: $59.16
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 Resource Selection by Animals: Statistical Design and Analysis for Field Studies Author: B.F. Manly Manufacturer: Springer ListPrice: $99.00 Offer: $65.93
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 Measuring and Monitoring Biological Diversity: Standard Methods for Mammals (Biodiversity Handbook) Author: Don E. Wilson Manufacturer: Smithsonian ListPrice: $29.95 Offer: $29.95
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 Advanced Distance Sampling: Estimating Abundance of Biological Populations Author: S.T. Buckland Manufacturer: Oxford University Press, USA ListPrice: $119.50 Offer: $113.52
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 Ecological Census Techniques: A Handbook Manufacturer: Cambridge University Press ListPrice: $57.00 Offer: $51.30
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 Sparrows of the United States and Canada: The Photographic Guide Author: David Beadle Manufacturer: Princeton University Press ListPrice: $29.95 Offer: $21.86
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 Shorebirds of North America: The Photographic Guide Author: Dennis Paulson Manufacturer: Princeton University Press ListPrice: $29.95 Offer: $19.77
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 Advanced Distance Sampling: Estimating Abundance of Biological Populations Manufacturer: Oxford University Press, USA ListPrice: $60.00 Offer: $44.80
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 Ecological Census Techniques: A Handbook Manufacturer: Cambridge University Press ListPrice: $43.99
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 Designing Field Studies for Biodiversity Conservation Author: Peter Feinsinger Manufacturer: Island Press ListPrice: $32.50 Offer: $29.90
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 Introduction to Distance Sampling: Estimating Abundance of Biological Populations Author: S. T. Buckland Manufacturer: Oxford University Press, USA ListPrice: $65.45 Offer: $58.90
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 Measuring Biological Diversity Author: Anne E. Magurran Manufacturer: Wiley-Blackwell ListPrice: $80.00 Offer: $80.00
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 SALAMANDERS U S & CANADA Author: Petranka Jw Manufacturer: Smithsonian ListPrice: $65.00 Offer: $52.00
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 Shorebirds of North America, Europe, and Asia: A Guide to Field Identification (Princeton Field Guides) Author: Don Taylor Manufacturer: Princeton University Press ListPrice: $35.00 Offer: $26.60
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 Measuring and Monitoring Biological Diversity. Standard Methods for Amphibians (Biological Diversity Handbook) Manufacturer: Smithsonian ListPrice: $26.95 Offer: $24.25
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 Bird Ecology and Conservation: A Handbook of Techniques (Techniques in Ecology & Conservation) Author: William J. Sutherland Manufacturer: Oxford University Press, USA ListPrice: $65.45 Offer: $65.45
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Techniques for Wildlife Investigation and Management Manufacturer: Wildlife Society ListPrice: $75.00
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