BIRDBASE / 11,589 Species / Detailed Information
Discover the World of Birds Through the Largest Avian Trait Dataset
Based on the research of
Prof. Çağan H. Şekercioğlu
Professor of ornithology, conservation biology, and wildlife ecology. BIRDBASE represents decades of species-level research and curation.
Developed by
I.M. Sezer
Bird lover and developer building this interface for browsing, comparing, and learning from bird data.
Tools
Practical views for ornithology work.
Statistics
Ornithological patterns at a glance.
Key conservation, habitat, diet, movement, and life-history summaries from a fixed snapshot of the bird records.
Dataset snapshot: 2025-12
Snapshot figures from a fixed extract of the bird records, not live counts.
11,589
All birds (incl. recently extinct)
Total Species
1,292
11.2%
Threatened
165
Since 1500
Extinct
91
Species
Flightless
Conservation Status
IUCN Red List classification of 11,195 assessed species
Dietary Guilds
Primary diet classification showing ecological roles
Global Biodiversity Distribution
Species count by biogeographic realm
Habitat Preferences
Primary habitat distribution across species
Body Mass Distribution
From tiny hummingbirds (2g) to giant ostriches (114kg)
Elevational Distribution
Average elevation range across species
Clutch Size Distribution
Number of eggs per breeding attempt (8,261 species)
Most birds lay 1-4 eggs; waterfowl and gamebirds can lay 15+ eggs.
Incubation Period
Days from laying to hatching (3,113 species)
Songbirds average around 14 days; albatross incubation can exceed 80 days.
Fledging Period
Days from hatching to first flight (2,720 species)
Precocial chicks leave the nest quickly; albatross chicks can need about 280 days.
Habitat Specialists
Species dependent on a single habitat type (2,384 species)
Dietary Specialists
Species eating only one food type (4,382 species)
Flight Capability
Ability to fly across all species
Movement Patterns
Migration and mobility behaviors
49% are sedentary; Arctic Terns can migrate more than 70,000 km/year.
Nest Architecture
Primary nest construction types
Social Structure
Primary social organization patterns
Mating Systems
Reproductive pair bonding strategies (3,358 species)
Conservation Hotspots
Threatened species by biogeographic realm