William, and anyone else interested in hawk migration, here's a 
fascinating post by Paul Roberts, founder of the Eastern Mass. Hawkwatch 
and student of migration patterns, a narrative of what was seen at Mt. 
Wachusett on what should have been a fairly lousy day by "conventional 
wisdom" that ultimately amounted to more than 12,000 birds, followed by 
some interesting observations about the whole phenomenon.  Well worth 
reading.

http://birding.aba.org/message.php?mesid=517116&MLID=MASS&MLNM=Massachusetts

Jane
(Shoreham)



On 9/19/2013 9:41 AM, Willem Leenstra wrote:
> Is there a time of day when the numbers are higher than others? Broadly
> speaking, that is, morning vs. evening?
>
>
> On 9/19/2013 1:34 AM, Jane Stein wrote:
>> Mt. Wachusett
>