1、The air is filled with birdsong.

2、As visitors walk through the halls, they hear birdsong.

3、Dialects occur in birdsong as well as in speech.

4、Without a doubt, you would find it dull at first the loudest sound is usually birdsong.

5、At that time, she had found the address of the birdsong family in the telephone directory.

6、I just love sitting in my garden, surrounded by trees, flowers and birdsong.

7、Revel in days of barefoot ease, serenaded by tropical birdsong and scented by cinnamon trees and frangipani.

8、A digital radio channel that only played birdsong and was an unexpected hit was taken off the air last year.

9、Mountains, waters, trees, wild fruits, birdsong, sunshine, breeze, blue sky, white clouds, all these are my private wealth.

10、He is accompanied by a chorus of birdsong and the tinkle of wind chimes from his office.

11、However PURE radio, that carried out the survey, can provide access to birdsong as one of 365 alarm tones available.

12、The runway ran for three or four laps, until a thin layer of sweat spread on the forehead, before stepping on a clear birdsong to go home.

13、In this paper, some progress in recent years concerning learning of birdsong, function of hippocampus and effect of neurotransmitter in learning and memory of birds is reviewed.

14、The evidence suggests that warblers use their extremely elaborate songs primarily to attract females, clearly confirming the effect of intersexual selection on the evolution of birdsong.

15、We have seen the traps and heard the birdsong recordings that they use. Now when they hear a car, they do at least turn the machine off.

16、After waking up, I just knew that was the birds outside the window in forest crowing loud in night. I haven't packed within a police car, but was awakened by the birdsong.

17、Large trees shaded the cemetery and birdsong was the only noise that broke the drowsy afternoon serenity as she laid the bright yellow daffodils near the miniature marble statue of a kneeling angel.

18、 Whether in the morning or at dusk, the mountain villas hidden in the dense mountain forests are covered with mist. There are always birds gliding lightly through the mist, leaving behind a string of crisp birdsong, like fairyland.

19、Along with the trend of Xiaoshi path, two retro style bamboo bridges crossed the road, followed by birdsong bridge and pin bamboo bridge, the shape of which is similar to that of the view bridge.

20、After passing through the birdsong bridge, there is a spring at the bridge. The spring is named Changsheng spring, and the longevity spring is also restored to the ancient style. There are two layers of the spring mouth, which are hexagon shaped and round.