The short answer: Most falcons weigh about 300 to 1,500 grams (0.7 to 3.3 lb), depending on the species, with larger species at the top of that range.
Falcon weight by type
Weight varies by species and sex. Here are typical adult examples.
| Type (example) | Typical weight |
|---|---|
| Kestrel | About 120 to 300 g (0.26 to 0.66 lb) |
| Peregrine falcon | About 550 to 1,500 g (1.2 to 3.3 lb) |
| Saker falcon | About 700 to 1,300 g (1.5 to 2.9 lb) |
| Gyrfalcon (largest) | About 800 to 2,100 g (1.8 to 4.6 lb) |
What affects falcon weight
- Species. Gyrfalcons are far heavier than small kestrels.
- Sex. Female falcons are typically larger and heavier than males.
- Region. Northern falcons tend to be bigger.
- Food supply. A recent meal adds temporary weight.
- Season. Body condition shifts with prey availability.
How falcon weight compares
A peregrine falcon weighs about the same as a can of soda or two, light enough for dives exceeding 300 km/h (185 mph).
Frequently asked questions
How much does a peregrine falcon weigh?
Peregrine falcons typically weigh about 550 to 1,500 grams, with females heavier than males.
Are female falcons bigger than males?
Yes, female falcons are usually noticeably larger and heavier, a trait called reverse size dimorphism.
What is the largest falcon?
The gyrfalcon is the largest falcon, with big females weighing up to around 2 kg.
