Okay, crazies, I have put my aluminium helmet on 'cause I swear aliens are fooling around with my physic this week.  I "left" home this morning and vacationed at Timmies until the spooks left. 
I think the idea of the description of the third chick being the runt of the litter came from a "late" hatching as in all three didn't pop out of the cake at once with a "tada!"  Maybe, too, the CBC forum read the word runt from this sight (maybe my posting--me bad - can't remember)  Nothing wrong with the word runt...called that many times when I was (still am) small.  
Okay, back to the real "bird talk."  I see one of the "siamese" pair likes to peak over the top of the ledge.  Oh, but, little one, it is a strange world over that hill.... 
