smastin

I'm sorry if this has been asked and answered, I could not find it by a search.
Basically I got into the car yesterday and my AC unit was blowing cold air, just not enough normally it's cold and very forceful; which is wonderful. I held my hand up to the dash vents and while the air was cold it was weak. Normally the car cools down in 5 minutes but for whatever reason it was not.
Any advice on what could be wrong?
Just a side note, I did hear what sounded like a bird chirping from behind my glove box for a few days (not anymore) and I do remember several birds trying to get into my car. Could it be related a this or am I just crazy?
Thanks.