秘密花园第四集 P6 - BBC.Secret.Garden.Series.1.4of5.The.Wye.Valley.1080p.x265.AAC.UMMU.NET_6

So catching enough insects is far from guaranteed. As night sets in, the family is unaware of the drama unfolding in the surrounding oak trees. The Taunus nightly duet has been joined by a less harmonious call. Inside their nest box it's pitch black, but our infrared lights reveal the source. Two young owlets just two weeks old. Already there are signs of sibling rivalry. The larger owlet, which hatched a few days earlier, is winning the fight for food. To start with, earthworms will do, but the owls have timed things well. The garden is now full of prey. The larger owlet is always first in the queue. He now wolfs down three rodents a day, and if left hungry, he may eat his smaller siblings. If food becomes scarce, only the strongest will survive. By late spring, the sun is high enough to flood the valley with light. The garden is getting more productive by the day. The bumblebee queen has successfully raised her first brood. Her eggs have developed from larvae into adult female worker bees. The queen releases a pheromone which suppresses their desire to breed. They have other duties. The smaller workers tend to get more of her larvae, while the larger ones venture out to gather more food. Vital fuel for the growing colony.