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Frogmouth

life science Maturity 5-7 Next article →

Frogmouths are a unique group of nocturnal birds belonging to the family Podargidae. These birds are active at night and live in the Indomalayan and Australasian realms. They are closely related to swifts, hummingbirds, and owlet-nightjars. Frogmouths are famous for their specialized physical features used for hunting. They possess large, flattened, hooked bills and a very wide mouth called a gape. These features help them capture various types of prey in the dark.

Solomons Frogmouth at night from Santa Isabel
Solomons Frogmouth at night from Santa Isabel

The way a frogmouth hunts depends heavily on its specific species. The three species in the genus Podargus are large frogmouths found in Australia and New Guinea. These birds have massive, flat, and broad bills. They can eat larger prey like mice or frogs. Sometimes, they will beat their prey against a stone before they swallow it. In contrast, the ten species in the genus Batrachostomus live in tropical Asia. These birds have smaller, more rounded bills and mostly eat insects. Both groups have bristles around the base of their bills. The Batrachostomus species have longer bristles that may protect their eyes from insect prey.

Large Frogmouth1
Large Frogmouth1

Frogmouths have very specific habits to stay safe during the daylight hours. They possess cryptic plumage, which is a pattern of feathers used for camouflage. This helps them blend into their surroundings to avoid being seen. During the day, they rest horizontally on tree branches. They also have a unique way of raising their young. A pair may lay up to three white eggs in the fork of a branch. The parents take turns sitting on the eggs. The female incubates them at night, while the male handles the incubation during the day.

Pair of tawny frogmouths
Pair of tawny frogmouths

Scientists have used DNA-DNA hybridisation studies to understand how these birds are related. These studies suggested that the two main frogmouth groups are not as close as once thought. Some researchers believe the Asian species might belong to a separate family called Batrachostomidae. A 2019 study provided more detail on this evolutionary history. It estimated that the Podargus and Batrachostomus groups diverged between 30 and 50 million years ago. This study showed they form a clade, or a group of organisms, that is a sister group to swifts, hummingbirds, and owlet-nightjars. The name Podargiformes was originally proposed by Gregory Mathews in 1918 and has since been reinstated for this clade.

CeylonFrogMouth
CeylonFrogMouth

There are many different species within the frogmouth family. The genus Podargus includes the Tawny frogmouth, the Marbled frogmouth, and the Papuan frogmouth. The genus Batrachostomus is much larger, containing ten species. These include the Sumatran frogmouth, the Javan frogmouth, and the Philippine frogmouth. A third genus, Rigidipenna, was established in April 2007 after a new species was described from the Solomon Islands. This genus includes the Solomons frogmouth. Population numbers vary widely among these birds. For example, the Solomons frogmouth has an estimated total population of between 2,500 and 9,999 individuals. The Sumatran frogmouth has a very rough estimate of over 10,000 individuals.

Marbled Frogmouth A22I6539 (cropped)
Marbled Frogmouth A22I6539 (cropped)

Conservation status is an important factor for many frogmouth species. Some birds face risks due to environmental changes. The Large frogmouth is currently listed as Vulnerable. This status is due to rapid deforestation across its known range. While many population numbers remain unknown, researchers continue to study these birds closely. This research helps us understand how habitat loss affects different species.

Gould's frogmouth
Gould's frogmouth

Frogmouths are also notable for their appearance to humans. In April 2021, researchers Katja Thömmes and Gregor Hayn-Leichsenring published a study about them. They used an algorithm to analyze more than 27,000 bird photographs on Instagram. They wanted to see which birds had the most aesthetic appeal to users. The study found that frogmouths were the most "instagrammable" type of bird. Photos of them received the highest number of likes relative to how often they were shown to users. This interesting finding was reported by news outlets like The New York Times and The Guardian.

Burung Paruh Kodok
Burung Paruh Kodok
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🖼️ Images & Media (15)
File:CeylonFrogMouth.jpg
CeylonFrogMouth.jpg
File:Pair of tawny frogmouths.jpg
Pair of tawny frogmouths.jpg
File:Large Frogmouth1.jpg
Large Frogmouth1.jpg
File:Gould's frogmouth.jpg
Gould's frogmouth.jpg
File:Solomons Frogmouth at night from Santa Isabel.jpg
Solomons Frogmouth at night from Santa Isabel.jpg
File:Batrachostomus cornutus cornutus 226545322.jpg
Batrachostomus cornutus cornutus 226545322.jpg
File:0A2A4818 Dulit Frogmouth.jpg
0A2A4818 Dulit Frogmouth.jpg
File:Batrachostomus hodgsoni 392592952.jpg
Batrachostomus hodgsoni 392592952.jpg
File:Burung Paruh Kodok.jpg
Burung Paruh Kodok.jpg
File:Sri Lanka Frogmouth 02.jpg
Sri Lanka Frogmouth 02.jpg
File:Sumatran frogmouth (cropped).jpg
Sumatran frogmouth (cropped).jpg
File:Batrachostomus septimus 216446014.jpg
Batrachostomus septimus 216446014.jpg

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