HSR: Holiday Beach (26 Oct 2002) Raptor counts (total=145)

reports at hawkcount.org reports at hawkcount.org
Sat Oct 26 17:28:47 EDT 2002

Holiday Beach Migration Observatory
Essex County, ON, Canada
Daily Raptor Counts: Oct 26, 2002

Species            Day's Count    Month Total   Season Total
------------------ ----------- -------------- --------------
Turkey Vulture              81          19857          20087
Osprey                       0             30            102
Bald Eagle                   0             26             36
Northern Harrier             1            342            593
Sharp-shinned Hawk          45           3665           7204
Cooper's Hawk                2            292            340
Northern Goshawk             1             22             26
Red-shouldered Hawk          1            301            305
Broad-winged Hawk            0             13           4886
Red-tailed Hawk             13           2296           2375
Rough-legged Hawk            0             12             12
Golden Eagle                 1             21             22
American Kestrel             0            740           2011
Merlin                       0             25             90
Peregrine Falcon             0             41             57
Unknown                      0             43             55

Total:                     145          27726          38201

Observation start time: 07:00:00 
Observation end   time: 14:00:00 
Total observation time: 7 hours

Site Coordinator: Steve Greidanus

Observers:        Jim McCoy, Mike Forton

Tennesee Trio: Jeanice Seals, Phyllis Coble, & Teresa Lindsey 

Cloudy and cool for most of today, despite a brief spell of morning
sunshine. Winds were light today, starting out at WNW-NW until noon, then
shifting to SW in the afternoon. Temps ranged from 5-10 celcius, with the
high ocurring during our brief deluge of sunshine.

Slow movement today, despite some early promising NW winds, the birds
simply did not show. Highlights from the most productive hour, 10-11 est,
were a below tower height close immature Goshawk, as well as 1 imm. Golden
Eagle mixed in the kettles of Turkey Vultures.

Large duck & blackbird movements today, 750 Crows, 50+ Horned lark,
American Goldfinch, Cedar Waxwing, 3 Eastern Phoebe, Marsh Wren, &
Bonapartes Gulls.

More of the same weather wise, hopefully a few more birds.
Report submitted by steve greidanus (steve.greidanus at hbmo.org)
Holiday Beach Migration Observatory information may be found at:

Holiday Beach Migration Observatory

Information on southern Ontario\'s hawk migration and the Holiday Beach
Conservation Area site

Southwestern Ontario is largely an area of flat, featureless farmland. There
are only two geographic features of note in the region. One is the proximity
of the Great lakes, which influence bird migration in the area to a great
extent, The second is the shape of the province, roughly funnel-shaped with
the narrow end to the southwest. These features confine south-bound bird
migrants, especially hawks, to specific flight corridors.

Holiday Beach Conservation Area was formerly a Provincial Park, but is now
administered by the Essex Region Conservation Authority (ERCA). It is
strategically located at the extreme southwestern tip of southern Ontario.
The park is on the eastern end of a large freshwater estuary known as Big
Creek. (Specifically the site is 1.1 miles south of the junction Highway 20
(old 18) and Essex Road 50, Town of Amherstburg).

The Holiday Beach Migration Observatory (HBMO) (founded in 1986) is a
non-profit, volunteer organization formed to promote the study and
protection of migrating birds. Activities focus primarily on fall migration
of raptors and other species. This site is in Essex County, Ontario, on the
north shore of Lake Erie near the Detroit River. In 1988, HBMO persuaded
Detroit Edison to donate a 40 foot Hawk Tower which is now at the site.

Southwestern Ontario has a funneling effect on migrating raptors due to the
geography of the nearby lakes and the reluctance of most raptors to cross
large bodies of water. Birds gain altitude over the flat farmland to the
north and east, rising easily with the thermals that such areas provide in
abundance. As the birds head south they meet Lake Erie and, reluctant to
cross it , turn west. With appropriate wind and weather conditions, birds
pile up along the lake shore and move west until they reach the narrow
crossing at the Detroit River (or island hop within the river mouth).

reports at hawkcount.org

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