thornbill

hummingbird group

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In hummingbird
In the thornbills (Ramphomicron and Chalcostigma), it is quite short, but in the sword-billed hummingbird (Ensifera ensifera), it is unusually long, contributing more than half of the bird’s 21-cm length. The bill is slightly downcurved in many species, strongly so in the sicklebills (Eutoxeres); it is turned…
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