Hummingbirds can count their way to foodTiny, feisty rufous hummingbirds are known for their long mi
Hummingbirds can count their way to foodTiny, feisty rufous hummingbirds are known for their long migrations, which take them up and down the length of North America each year. Now, they have a new claim to fame: They can keep track of particularly juicy flowers depending on where they appear—first, second, or even fourth—in a line-up of blooms. Although this understanding of “numerical order” may sound simple, it’s a complex skill that may help hummingbirds remember the easiest routes between nectar-rich flowers. It’s also the first time researchers have seen the ability in a wild vertebrate. -- source link
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