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When Does a Crossbill's Bill Cross?
Manage episode 434694190 series 2381
A young crossbill starts life with a wedge-shaped beak. As it grows up and starts to feed itself by removing conifer seeds from their tough packaging, the tips of its bill begin to grow rapidly — and then they cross. By the time the bird is a month and a half old, the tips of its bill become fully crossed.
More info and transcript at BirdNote.org.
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BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.
2568 episode
Manage episode 434694190 series 2381
A young crossbill starts life with a wedge-shaped beak. As it grows up and starts to feed itself by removing conifer seeds from their tough packaging, the tips of its bill begin to grow rapidly — and then they cross. By the time the bird is a month and a half old, the tips of its bill become fully crossed.
More info and transcript at BirdNote.org.
Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks.
BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.
2568 episode
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