In the morning
Definition 1 of 2
Pro Tip 1/3Time-Specific Activity
Used to talk about routines or activities done regularly at this time. 
She reads the newspaper in the morning.
Pro Tip 2/3Describing Events
Useful for describing events that happen shortly after waking up. 
The birds start chirping in the morning.
Pro Tip 3/3Not Just Early
It can refer to any time before noon, not just the early hours. 
We're having a meeting in the morning, at 11 AM.