This is Birdnode.

In the desert southwest, summer temperatures sizzle rising well over 100 degrees.

And in some parts of the desert, there is not a drop of water for miles.

Yet some birds thrive in this scorching landscape.

Here a black-throated sparrow sings from the thorns scrub.

Now, a cactus ren announces itself a top of barrel cactus.

And neither will be flying miles every day to the nearest source of water.

So how do they survive?

Birds like all animals perish without water.

Desert birds, however, make the most of very little.

They tuck into the shade in the heat of the day, so they won't lose water in panting.

They have extremely efficient kidneys, so they excrete almost no liquid.

And they obtain moisture from foods, like nectar and fruit, as well as insects and other

prey.

Even when eating primarily seeds, black-throated sparrows are able to extract enough water

from this dry food that they may never need to take a drink.

Still, when that next late summer thunderstorm arrives, you have to think those temporary

puddles are going to look mighty refreshing.

Soundscapes featured in today's show were recorded by Gordon Hempton and provided courtesy

of QuietPlanet.com.

Listen again at birdnode.org.