Why do birds sing more often at dawn?

Why do birds sing more often at dawn?
#rajbirmangat
#rajbirsinghmangat
#whydobirdssing, #whydobirdssingearly, #whybirdssing, #whydobirdschirpatnight, #whydobirdsingearly, #whydobirdschirpinthemorning, #whydobirdschirpinginthemorning?, #whatdoesitmeanifbirdssingatnight, #12birdsthatsingatnight, #whybirdschirpinginthemorning, #forestsoundofbirdssinging, #naturalsoundofbirdssinging, #birdssinging, #birdssingingvideo, #relaxingsoundofbirdssinging, #relaxingbirdssinging, #singingbirds, #peepshowatdawn, #birdsofcanada, #birdschirpingrelaxingmusic, #waterbirds, #naturesoundsbirds