How did the name of the camp burial bird come from?

When some European immigrants moved to the Australian coast to settle down, they found many piles of big leaves there. At first, these immigrants thought it was a fortress piled up by local indigenous children when they played games, while others thought it was a grave after the death of indigenous people. 1840, biologist John opened a pile of big leaves for the first time. He was surprised to find that what was buried in the "grave" was actually a bird's egg. Later, people called this bird with a pile of big leaves a burial bird.

Every year in the breeding season, the jungle keeps the male burial birds busy. They kept digging on the ground with their big claws, and finally dug a pit about 1 m deep with a diameter of 4 or 5 meters. Then, they collected a lot of dried leaves, hay and so on. Pile them in the pit. It is not successful until the pile is above the ground 1 m and the diameter of the pile reaches 3-4 m. After the pile of leaves is built, just wait for the rain. After the leaves were soaked by rain, the buried birds began to pile sand again. The sand layer can be as thick as 0.5 meters. It turns out that buried birds don't hatch their young with their own body temperature like other birds, but rely on the heat generated by the decay and fermentation of leaves in the leaf pile to hatch their eggs. Some buried birds can even use the heat of sunlight or volcanic activity to hatch their eggs.

After the "great project" of burying birds was initially completed, the leaves began to rot. When the heat generated by fermentation made the temperature in the pile reach 33.3℃, it built an egg room on the top of the pile. The female bird climbed to the top of the big leaf pile and laid an egg in the egg room. After laying eggs, the females leave immediately, and the males put the eggs back. In this way, every 2-3 days, the female lays an egg, which can produce about 30-40 eggs.

As the leaves ferment, the heat accumulates more and more, and the temperature of the egg chamber rises. If the temperature is too high, the buried bird will quickly pull open the sand to emit heat. After the temperature in the egg room became low, the buried birds quickly piled sand on the leaves. In this way, the buried birds tore up the sand again and again, piled it up again and again, and were busy day and night, keeping the temperature of the egg room at the top of the pile at 33.3℃. It is speculated that burying the skin of a bird's neck is a very sensitive thermal detector.

After 7 weeks of incubation, the buried birds began to hatch. These chicks not only peck through the eggshell, but also dig holes from the egg room. It will be several hours before they can see the strange world outside the egg room. According to the observation records, it takes several months and four months to accumulate a large leaf pile, adjust the room temperature and be responsible for hatching. Therefore, it can be said that the burial birds are probably busy around the leaves all their lives.