It's been a while since posting in this blog. 
A painful and frustrating bout with Shingles, along with   "frozen shoulder," (both) in my right and dominant arm (and hand) has   rendered typing and other computer maneuvers difficult. 
But that is not to say I haven't been to Central Park on   regular basis to observe and photograph the geese. 
First, to catch up on where this blog left off this past   August:
As predicted, the two goose families who had raised their   combined four goslings together at the CP Boat Lake did indeed depart just   shortly before the fledglings turned 11-weeks-old (the magic number seemingly   for new goose families to leave child-rearing locations). It's   not clear where the two families went after departing the Boat Lake, but there   have been a number of geese coming and going at Harlem Meer over the past   several months and it's possible the families joined up with them. Or, like   Hansel, Greta and their new offspring, it's possible the two families left   Central Park entirely not to return again until next spring. 
The CP Reservoir (and Boat Lake) have been relatively   goose empty over the past two months except for the migratory Canada geese who   are now passing through and briefly resting at the Reservoir before take-offs at   sunrise in great numbers. 
Despite an unusually warm October in NYC in which people are   still walking around in T-shirts and shorts, Canada geese have kept exactly   to their fall migration schedules without missing a cue. 
I have often maintained that Canada geese have their own   calendars and stick rigidly to them regardless of fluctuations in weather or   other circumstances. This is true whether the time of year calls for mating,   egg-laying, departing molting or gosling-rearing locations or migrations. When   the sun is in certain place in the sky and the days long or short, the   geese pick up and go. These are patterns set over millennia and little, if   anything alters them. 
This is not however, to say the geese aren't adaptable.   
Canada geese are extremely reactive and adaptable to   danger and safety issues in their environments.  One of the   prime reasons for many geese electing to stay mostly in city   and suburban environments (even in winters when natural food is scarce) is   safety from hunters. Safety is apparently more important to them than even food   availability. 
Canada geese can in fact, survive weeks on little   food due to them eating heartily and building up fat reserves   during fair weather. But if a bullet gets them or a treasured family member,   their lives are effectively over. 
This may explain why so many geese actually and   ultimately winter in places like New York City and Chicago. Yes, the going   can be tough in winter, but most geese (and ducks) are actually able to   survive. 
The geese who ultimately winter in New York City have not   arrived yet. They are usually the last geese to migrate (probably because they   don't fly that far) and don't typically arrive to NYC until December.   
But for now, thousands of migrating Canada geese are   passing through NYC and where they ultimately fly to and end up, I cannot say.   
I just know there is an invisible and well-traveled "highway   in the sky" through which virtually all the geese move. They do so eagerly and   with great enthusiasm. It's amazing to think that many of them are only   five-months-old -- literally babies on the move!
Every morning, within an hour of the sun's rising, the   geese take off from the Reservoir in skeins of seven to twenty-five   and head east over the shorter buildings of Queens. (They know enough to avoid   the Manhattan skyscrapers were they to head directly south.)
As casual observer to the wonders above me, I can only rejoice   along with the honking geese and wish them God's speed and protection.   
'Till we hopefully meet again next spring.  --   PCA
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