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Thayer
Gold
v5
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Thayer
N. America
v4
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Thayer
My State
v4
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iBird Explorer Pro 2.3
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Audubon
Birds
1.3.1
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National Geo Birds
1.3
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Sibley
Birds N.A.
1.0
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Peterson
Backyard
Birds 2.0
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IMPORTANT STUFF
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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Release Year
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2009
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2010
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2010
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2009
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2009
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2009
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2010
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2008
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Number of Species
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959
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702
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300
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924
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750
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750
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811
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150
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Geographical range
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North Am
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North Am
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North Am
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North Am
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North Am
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North Am
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North Am
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Backyard
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Includes Photos?
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Includes Drawings?
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Import Your Photos and Songs?
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Hawaii included?
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Price
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$99.95
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$69.95
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$29.95
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$29.99
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$19.99
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$29.99
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$14.99
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$2.99
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IDENTIFICATION BENEFITS
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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Taxonomic search?
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Band Code search?
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Latin name search?
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SPECIAL FEATURES
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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Quizzes?
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Create Quizzes on Anything?
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Includes The Birder's Handbook?
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Includes Spectrogram (to see bird songs)?
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Favorites/checklist
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Species notes/life list
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Embedded help
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SEARCH FEATURES
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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Size
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State or province
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Habitat
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Primary color
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Secondary color
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Backyard Feeder
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Family
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Field marks
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Search by Song?
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ARTWORK & PHOTOS
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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Multiple photos per species?
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Multiple illustrations per species?
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Multiple songs per species?
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Zoomable images?
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Zoom range
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full screen
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full screen
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full screen
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200%
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200%
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none
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none
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300%
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IDENTIFICATION AIDS
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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Range maps?
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Abundance maps?
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Similar birds?
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Family descriptions
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Side-by-side comparisons?
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Play songs and see photos on iPod?
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Flickr?
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Wickipedia?
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FORMAT
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Thayer
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Thayer
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Thayer
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iBird
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Audubon
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Nat. Geo.
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Sibley
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Peterson
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DVD/iPhone App
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DVD
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DVD
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DVD
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iPhone
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iPhone
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iPhone
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iPhone
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iPhone
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