yea.... birds are hard to ID sometimes...
As a biologist sometimes I need to be able to ID birds in the habitat.... most of the time i can't.
In the city, most sparrows you see here in California are House Sparrows.
Sometimes you will see white crown sparrows or golden crown sparrows...
Ahhh tire flips... i remember doing these at 7 am in the mud...... I'm pretty sure i was flipping tires that were double my weight (I was 45 kg at the time)