https://dxnest.com/yen-vun-xo-tinh-che-50g/ https://dxnest.com/yen-vun-xo-tinh-che-100g/ Kingfishers nest in tunnels that they excavate into steep dirt banks, usually near water. A pair takes turns digging a tunnel that typically ends in a football-sized nest chamber. The tunnel often slopes upward from the entrance, perhaps to keep rainwater from flooding the nest. The tunnel can take several days to dig. Look for twin grooves on the outside of the tunnel’s opening to see if it’s in use. Kingfishers are primarily fish eaters, but they also eat crayfish, frogs, tadpoles, and aquatic insects. They sometimes hunt other birds (including small mammals and young birds) or lizards, as well as berries. They also sometimes hawk insects, but they rarely take prey away from the water. The male and female both incubate a clutch of up to seven eggs. The first egg hatches after about 19-21 days. After the eggs hatch, the parents begin bringing progressively larger fish to their chicks. The male may bring twice as many fish as the female. The kingfishers’ feet are unusual in that they are syndactyl, meaning the outer toes are fused together. This allows the bird to dig efficiently, shoving soil out of the way with their feet while working on the tunnels. have long, rounded bills and short tails. Their bodies are stocky and blue-gray, with a ragged double-pointed crest. When kingfishers select a site for their nests, they avoid steep banks with vegetation. Instead, they choose sites high above the water’s edge and away from dense trees whose roots might interfere with digging. They also prefer a bank with a higher proportion of sand than clay. A kingfisher often finds its best burrow site by probing it with its bill during courtship displays. After a kingfisher selects a site, it tunnels in, often with its wings raised. The bird can sometimes chisel through solid rock, but more often it needs to fly into the bank, bill outstretched, and stomp on the surface repeatedly until it sha