In the South
American tropics,
where hummingbirds
must compete for
food, evolution
has drastically
reshaped their
bills. They are
thicker and more
rig
(
more)
In the South American tropics, where hummingbirds must compete for food, evolution has drastically reshaped their bills. They are thicker and more rigid, often with a hook on the end. In some cases, they have jagged points, like rows of teeth — all the better for fighting off rivals!
Read the story here:
https://www.nytimes.com/2019/0...
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