Mystery #1Tier 2biology / birds / flight
How does a heavy bird lift itself into the air and stay up?
A goose can weigh as much as a full bottle of water, yet it heaves itself off a lake and flies for miles. Drop a stone that heavy and it plummets straight down. Flapping clearly helps, but flapping your own arms gets you nowhere. So how does a heavy bird lift itself into the air and stay up?
Your guess
What do you think lets a bird get airborne and stay there?
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