Recently, pairs of mandarin ducks can be seen from time to time searching for holes and exploring in the tall Chinese parasol trees along the Beishan Street by the West Lake. It turns out that mandarin ducks are about to enter the breeding period now, and those who usually live in groups on the West Lake begin to seek tree cavities by the lake for “bridal chamber” after having found their partners to build nests and lay eggs, breeding the next generation.