March 18
[Day 17] (Bill Wilson , assisted by Doug Pedersen) The temperature
was -8C at 0720, rose to a high of 3C from 1500 to 1800 and was 0C at
1945. Ground winds were variable to NE 2-5 occasionally gusting 10
km/h to 1700 after which they were NE 5-15 gusting 20 km/h, while
limited data from the Nakiska Ridgetop indicated NNE-NE winds 6-12
km/h between 1500 and 1800. Cloud cover was initially 10% altostratus
that became 80% by 0900 and 100% after 1100, providing excellent
observing conditions. A season-high total of 25 migrant raptors moved
between 0842 and 1843 with 11 of the birds (1 Bald Eagle and 10
Golden Eagles) seen between 1600 and 1700. The flight comprised 1
adult Bald Eagle, a season-high count of 23 Golden Eagles (22a,1u)
and the season's first columbarius
Merlin of unknown age and sex. Many of the birds were first located
soaring over Mount Lorette or even farther to the NW over Mount
McGillivray suggesting that the birds were moving there from east of
the Fisher Range over Wasootch Creek. The relatively calm conditions
resulted in soaring flight being seen for the first time this season.
12.42 hours (155.69) BAEA 1 (10), GOEA 23 (94), MERL 1 (1) TOTAL 25
(106)
Please note
that next Tuesday, March 20 is the 20th
anniversary of sighting the first Golden Eagle over Mount Lorette
during a general survey conducted by Des Allen and myself, that led
to the start of systematic monitoring of eagle migration through the
Front Ranges of the Rocky Mountains. We hope that present and past
observers, members of RMERF and and members of the general public can
come to the Hay Meadow site to help us celebrate. The weather
forecast is good and the eagles could well be moving in spectacular
numbers: they certainly have a lot of catching up to do! See you on
Tuesday.
Peter
Beauvais
Ridge (Peter
Sherrington 1400-1430 and 1700-1730) The first visit saw a
temperature of 4C, light to moderate NNE winds and 100% uniform
altostratus cloud giving hazy sunshine, but no raptors were seen. On
my second visit the temperature was 2C, winds were moderate NW and
the mountains to the south were mainly obscured and by 1730 snow had
moved in and obscured the Beauvais Ridge. A single adult resident
Golden Eagle was the only raptor seen. 1 hour (15.08) TOTAL 0 (50)
The
further adventures of “Elaine” Elaine
today moved about 37 km north of where she was on March 16.
0 comments:
Post a Comment