Largest Bird Eggs by Weight
Key Findings
About This Dataset
Largest Bird Eggs by WeightThe ostrich egg (1,400 g) is the heaviest laid by any living bird, more than twice the weight of the next-largest eggs from the cassowary and greater rhea (600 g each) and the emu (550 g). All four heavyweights belong to large flightless birds, whose big bodies produce correspondingly big eggs. The kiwi (400 g) is the remarkable exception: though a chicken-sized bird, it lays an egg proportionally the largest of any bird - up to a quarter of the mother's body weight. The contrast at the bottom is staggering: an ostrich egg outweighs a chicken egg (60 g) more than twentyfold and the bee hummingbird's (0.5 g) by nearly 3,000 times, spanning almost the entire size range of birds in a single chart.
Data Insights
Numbers, trends & sources behind this chart
Methodology & source
- Data source
- Science Access / references
- Coverage
- 7 entities · 7 observations
- Measure
- Egg Weight (g)
- Last updated
- 12 July 2026
- Compiled by
- The ANYSTAT team, from the source above
- Values are shown as reported by the source. Nothing is rescaled, rebased or converted — the only changes are thousand separators and decimals shown to two places.
- Entities are ranked highest-first on their value.
Data Sources & References
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