Why do birds sing more when it's sunny outside?

Question

Cloudy weather, and it's almost silent. Then the sun comes out and there are myriads of birdsongs. Why?

Answer 1

Its more of a reaction to the changing season and spring rather than the amount of sun...

"When birds are exposed to light for longer periods, certain brain cells trigger a series of hormonal reactions telling them to find a mating partner, which they do by singing."  ~according to Reuters

Birds are most active during the day obviously so they do most of their singing and mate-searching when the sun is out during the spring months.

Answer 2

The idea of "Singing in the rain" might make a great movie, but the birds are not that stupid,

Ian M

Answer 3

actually if you give a listen the birds are most active singing in the early morning and close to dusk,different species will prefer different times of day to attract a mate for example robins in the AM,morning doves in the late PM,and whip-poor-wills at night.

Answer 4

The birds are thanking God for a beautiful day.  They are making a joyful noise unto the Lord.

Answer 5

Because thats when they are happy or because thats there favorite part of the day .=)

Answer 6

We are miserable when it is cold,dull and cloudy.

So once sun comes out we get cheerful lol tweet tweet!