Education

• Field Museum – Chicago Peregrine Program
  
• National Fish and Wildife Foundation
  

Life Histories

• Birds Of North America Online
  
• Global Distribution (source: Global Raptor Information Network)
  
• Poland
• UK

Maps

• Africa (Nimbia)
  
• Australia (Australian Museum)
  
• North America (Cascades Raptor Center)
  
• World – subspecies map in Wikipedia

Organizations

• Canadian Peregrine Foundation
• Hawk Migration Association of North America
• Midwest Peregrine Society
• Peregrine Fund

Research

• Falcon Research Group

General Observations

• Ebird
• North American Christmas Bird Counts

Genetic Research

• Brown
• International  Wildlife Consultants (UK) Ltd.
• Migration Research Foundation

Specimen Information

• Ornis  
• Field Museum Ornithological Collection Online Database
  
• Southern Cross Research Project
• Global Raptor Information Network
  

Literature Searches

• Global Raptor Information Network

Vocalizations

• Nature of New England
• Santa Cruz Predatory Bird Research Group (SCPBRG) - Description related to courtship behavior
• The Raptor Center - Actual vocalizations, includes recordings but without corresponding behavior description.  
  

Webcams - USA

• Illinois – Waukegan
• Minnesota – Minnesota Power & Light
• New Jersey
• Ohio – Cleveland
• Pennsylvania
• Wisconsin
• West Virginia

International Webcams

• Canada
• Czechoslovakia, Prague
• Germany, Heidelberg (AG Wanderfalkenschutz Heidelberg; Wanderfalkenschutz)

Photographs

• Flicker Site
  

Misc / World Sites

• Australia
• Bird Life International
• Barcelona
  
• Brussels
  
• Birds of  Skopelos Island, North Sporades, Magnesia,  Greece
  
• Italy – (Florence)