Screaming a lot typical?

So my son is a few days away from being 5 months old. Since about 3 and a half months old he started to scream a lot during the day. Not crying but just screaming. I will sit him in the jumper and he will be fine for about 5 minutes then will scream. I'll move him to the playmate and again will start screaming. He puts his toys in his mouth and screams so loudly.

Is this typical behavior?

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