BirdNote Daily

In parts of the United States, House Finches overlap with similar-looking Purple Finches. Their distinct songs help us sort them out. House Finch songs are jumbled and have a sharp, buzzy note — especially during the breeding season. Purple Finches’ songs, on the other hand, are smoother and lack the buzzy note.
This episode is brought to you by Wild Delight Bird Food, which aims to support wild bird populations with clean, nutritious ingredients in every blend. Available at Chewy.   
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Photographer Xavi Bou creates incredible images of birds and their movements by combining his love of photography and technology with his love for birds and nature — as seen in his book, Ornithographies. He’s especially drawn to European Starlings and their movements as a flock, called a murmuration. The starlings fly in a tight, synchronized group, sometimes to avoid a predator.
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A forest in New Zealand rings with the sound of bellbirds, also known as Korimako or Makomako. Many bellbirds sing together, especially in the morning. Pairs sing duets. And a pair may counter-sing with its neighbors, perhaps letting them know that this patch of land is taken. It all builds to a brilliant, ringing dawn chorus.
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No human dreams of relaxing on the shores of Novaya Zemlya, an archipelago in the Arctic Ocean that’s best known as a Soviet testing site for nuclear weapons. Yet, a growing flock of Pink-footed Geese have begun to make this militarized zone their summer home. Though this region was once too cold for the geese to raise young, climate change — and increased competition for food — may have made Novaya Zemlya a compelling alternative to their traditional territory in Svalbard. It’s also possible that the Pink-footed Geese found the archipelago by following other migratory waterfowl, which could prove to be a rare example of cultural knowledge being transmitted between species.
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It might sound strange, but dirt helps birds scrub themselves clean. Birds of all sizes, like the Eurasian Skylark, often scrape a depression in the ground and flick dirt onto their bodies, shimmying to shake it off. Experiments showed that birds use dust to prevent oils from building up on their feathers and to remove dandruff — much like humans using shampoo in the shower!
More info and transcript at BirdNote.org.
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