Animal ID
/Natural History/Animal Life Cycle & Growth
Explore Taxon:
Avian Altricial Ontogeny

Golden Eagle
Aquila chrysaetos

Explore the complete life journey from birth to maximum documented longevity. Move the interactive age slider below to see real-time biometric growth ranges, developmental milestones, metabolic changes, and ontogenetic stages.

Avg Wild Lifespan
25 Years
Typical in habitat
Max Documented
45 Years
Record longevity
Peak Daily Gain
Species-typical; fastest during Hatch to first flight
Growth velocity
Aging Pattern
Gradual Aging
Senescence curve
Golden Eagle
Taxonomic Hierarchy
Accipitriformes / Accipitridae
1

Interactive Lifespan & Growth Scrubber

Drag the slider or click any milestone step to observe dynamic biometrics and physiological changes.

🦅
Active Life Stage
Nestling
🐣 Birth / Day 0Selected Age: Birth / Hatch / Day 0👑 Full Maturity & Maximum Longevity
WingspanRange
10 – 14 cm
Peer-reviewed anatomical bounds for this developmental bracket.
Body Mass RangeEstimated
0.085 – 0.12 kg
Velocity: Rapid growth phase
Reproductive Maturity0%
Juvenile pre-pubescent phase
Predation Vulnerability
Critical (High Predation)
Survival probability relative to adult predation apex status.
🌿Dietary Intake & Nutrition at Birth / Hatch / Day 0

Parent-delivered meat.

🐾Behavior, Locomotion & Ecology

Dependent early stage (cliff eyrie).

Key Developmental Milestones at this Stage:
First independent feeding attempts
Scientific Note on Precision: Growth values are approximate biological ranges derived from field and veterinary records. Exact size varies by sex, population genetics, nutritional availability, climate, and health.
2

Taxon-Specific Life Stage Machine

How Golden Eagle progresses through distinct morphological phases.

🥚
Stage 1

Egg

Incubation weeks

Incubated in cliff eyrie.

Anatomical Highlights:
  • •Hard eggshell
  • •Developing embryo
Ecology: Nest egg.
🦅
Stage 2

Nestling

Hatch to feathering

Altricial; parents deliver prey.

Anatomical Highlights:
  • •Downy coat
  • •Growing flight feathers
Ecology: Nestling.
🦅
Stage 3

Fledgling

First flights

Learns stoop and bind.

Anatomical Highlights:
  • •Full remiges
  • •Strengthening pectorals
Ecology: Fledgling hunter.
👑
Stage 4

Adult

Years

Prime raptor with golden nape hackles.

Anatomical Highlights:
  • •Adult plumage
  • •Peak flight power
Ecology: Adult raptor.
🌟
Stage 5

Elder

Late life

Flight and hunting efficiency may decline.

Anatomical Highlights:
  • •Feather wear
  • •Arthritis risk
Ecology: Elder.
3

Growth Timeline Reference Matrix

Standardized peer-reviewed biometric development data.

Age MilestoneLife StageWingspan RangeBody Mass RangeMaturityDietary Regime
🦅Birth / Hatch / Day 0Nestling10–14 cm0.085–0.12 kg0%Parent-delivered meat.
🦅Early growthNestling30.4–39.9 cm0.435–0.886 kg12%Torn carcass pieces.
🦅Mid juvenileFledgling69.5–89.6 cm1.1–2.4 kg35%Hares, marmots, birds.
🦅Late juvenileJuvenile112–144 cm1.8–3.9 kg60%Hares, marmots, birds.
🦅Near maturityAdult155–198 cm2.6–5.5 kg85%Hares, marmots, birds.
👑Prime adultPrime Adult177–226 cm2.9–6.4 kg98%Hares, marmots, birds.
👑Later adultElder180–230 cm3–6.5 kg100%Hares, marmots, birds.
Growth Velocity Profile
Peak Expansion: Hatch to first flight
Proportion at Birth: Birth/hatch size is a small fraction of adult size for Golden Eagle
Sexual Dimorphism & Human Scale
Male vs. Female: Females larger (reversed sexual dimorphism).
Scale: Wingspan wider than human armspan
Developmental Breakthroughs

Key Milestones in the Life of a Golden Eagle

🌱Early life

Golden Eagle Early Independence Skills

Critical early learning period unique to golden eagle ecology.

📈Growth peak

Peak Growth Window

Hatch to first flight is when size accumulates fastest.

👑Maturity

Sexual Maturity

Typical maturity near 4 years for this species.

🧭Adult ecology

Adult Niche Mastery

Adults specialize in cliff eyrie.

🍽️Nutrition shift

Diet Transition

Torn carcass pieces.

Frequently Asked Questions About Golden Eagle Life History

Scientific answers to high-intent queries regarding lifespan and growth.

Often 20–30 years wild.

Featured on