To access my study,
A NEW FORECASTING TOOL FOR RAPTOR MIGRATION: BLIPMAP
In the evening before, or during the
morning of observing migrating raptors, on the internet find the velocity
at which thermals are rising over and around your hawk-watch site. Thermal
updraft velocity is found at: www.drjack.info/blipmap
or by typing in "Blipmap Regions".
Click on your region, then scroll down to FORECASTS,
click on "Thermal Updraft Velocity".
Take note of the thermal updraft velocity over and around your hawk-watch
Relate your day's raptor count to the thermal updraft velocity over and
around your hawk-watch site.
Assuming that the spring preferred direction of flight is northward, look
for areas or corridors of thermal updraft velocity that would assist migrating
raptors to pass over your hawk-watch site. It is assumed that the fall
migration flight is in a southerly direction.
Several days of relating thermal updraft velocities to raptor count numbers
in your area may be required before a correlation between thermal activity
and migrating raptor counts becomes evident.
Raptor migration data collected from hawk-watch sites participating in
HMANA's HawkCount can be accessed at: www.hawkcount.org.
My complete study based on data from HMANA's HawkCount, and BLIPMAPs,
may be found by clicking the above link, "Click Here".
Individuals who are not associated with formal raptor monitoring may very
well find BLIPMAPs to be extremely interesting and useful in their individual
observations of raptors during the spring and fall migrations.
I welcome your comments.