Online Data Summaries by Project
Current Lab of Ornithology Projects
eBird
Summaries available: Maps; graphs; weekly, monthly, and yearly reports (table format).
Types of data: Abundance, distribution, species lists, irruptions;
eventually population trend estimates by species and by region.
Years available: 2002 - present, with historical data being added by users.
Great Backyard Bird Count
Summaries available: Maps (point maps, surface maps, group-size maps
and regional maps); state and province tallies (how many birds reported
and where); snow-depth project results.
Types of data: Abundance, distribution, species lists, irruptions.
Years available: 1997 - present.
Project FeederWatch
Summaries available: Maps (point maps, surface maps, group-size maps and regional maps); top 25 lists by state and province.
Types of data: Abundance, distribution, species lists, irruptions of
feeder birds, seasonal and annual dynamics - by month across years, or
seasonal change within a year.
Years available: 1987 - present.
House Finch Disease Survey
Summaries available: Maps and graphs in BirdScope articles on various aspects of tracking this disease in wild birds
Types of data: Abundance and distribution of diseased birds; seasonal and annual disease prevalence.
Years available: 1994 - present.
Historical Lab of Ornithology Projects
Autumn HawkWatch
Summaries available: Static and animated maps by species; count summaries by site, data, species.
Types of data: Abundance, distribution, species lists, migration data.
Years available: 1998-2002
BirdCast
Summaries available: Radar images of migrating birds, species list tables by site, abundance graphs.
Types of data: Abundance, distribution, species lists, migration data.
Years available: 2000-2001
Irruptive Bird Survey
Summaries available: Animated maps; count data by state.
Types of data: Abundance and distribution of irruptive bird species; maps.
Year available: 2000.
Outside the Cornell Lab of Ornithology
Patuxent Wildlife Research Center
Go here for access to web sites and data for a number of
bird-monitoring programs in North America, including the Breeding Bird
Survey.
Tips for Exploring and Understanding Bird Population Results
Movements of Bird Populations
Overview and discussion plus case studies of seasonal migration,
irruptions, range expansions, static populations, and timing of
seasonal migration.
Summaries available: Static and animated maps.
Types of data: Migration data, irruptions, range expansions, and other movements of static populations.