LifeBirds 'dream sing' by moving their vocal muscles in their sleep Zebra finches sing during the day, and at night while they sleep their vocal organs act out the motions of singing, a bit like a sleepwalking person 51¶¯Âþ
LifeBlue tits divorce their partners if they turn up late to mate Blue tits were 5 times less likely to stay faithful if one partner had to wait more than 3 days for the other to arrive 51¶¯Âþ