March 4 [Day 4]
(Bill Wilson) There was 3 cm of fresh snow at the site and the
temperature low was -4C rising to 6C at 1200 and 1300 and was 2C at
the end of the day. Ground winds were variable N-NE-E 2-8 gusting 13
km/h to 1100 after which they were SW 5-15 gusting 30 km/h for the
rest of the day, while ridge winds were SW moderate to strong all
day. Cloud cover was 70-100% altostratus to 1400 after which it was
100% low stratocumulus that obscured all the ridges. Very light snow
that had fallen all day became steady moderate snow after 1400. Four
single Golden Eagles (3a,1u) moved along the Fisher Range at 1135,
1143, 1213 and 1357 before the ridge became obscured. Other birds
noted were 1 adult non-migratory Bald Eagle, 13 Common Ravens, 4
American Dippers, 20 Bohemian Waxwings and 1 Song Sparrow. 10.16
hours (39.49) GOEA 4 (6) TOTAL 4 (6)
Beauvais
Ridge (Peter Sherrington) Between November 25 and February
5 I conducted late afternoon reconnaissance counts from the deck of
Phil Hazelton's home on the
Gladstone Valley road about 5 km SSE of Beaver Mines. The combined
species count over 46 days (102.22 hours, an average of 2.22
hours/day) was a remarkable 922 raptors of 9 species comprising 571
Bald Eagles, 3 Northern Harriers, 6 Northern Goshawks, 5 Red-tailed
Hawks, 274 Rough-legged Hawks, 49 Golden Eagles, 3 Merlins, 1
Gyrfalcon, 9 Prairie Falcons and 1 unidentified eagle. All the birds
were moving from the north and the movement did not appear to be
connected to the Livingstone Range migration monitored at the
Piitaistakis-South Livingstone site. These birds were initially
assumed to all be migrants explained by the exceptionally mild nature
of the winter weather. When the movement persisted into February,
however, It became apparent that at least some of this movement
represented birds moving south late in the day to roost in the
foothills and mountains in the area. On the last day of observation,
for example, 11 of the evening's 17 Bald Eagles soared high together
over the ridge just before 1700 before the descended behind the
ridge presumably to roost together in or near the Mill Creek Canyon.
Most of the November and December movement was almost certainly true
migration while the February movement was equally certainly roosting
behaviour. It is probable that mid December to early January
represented a mixture of the two, which may prove impossible to
differentiate.
Today
I spent 2.25 hours (1530-1715) at the site and counted 11 birds
moving south to roost: Bald Eagle 7 (2a,2sa,3j), Rough-legged Hawk 2
(1 light, 1 dark) and Golden Eagle 2 (1a,1j). No migrants were seen.
2.5 hours migrants TOTAL 0 (0); roosters: BAEA 7 (7), RLHA 2 (2),
GOEA 2 (2) TOTAL 11 (11)
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