The Mt. Lorette Raptor Count has now begun. Welcome to another exciting year of watching the birds migrate! We most enjoy having visitors to the site and assisting in the sightings. First official day of counting began on 18th February 2007. Follow the daily movement of the raptors on this blog updated daily by Peter Sherrington.
Friday, March 30, 2007
Thursday, March 29, 2007
Wednesday, March 28, 2007
Tuesday, March 27, 2007
DAY 38 (March 26) Cliff’s morning shift was finally graced by clear weather which unfortunately was a dreaded “blue-out” with clear skies and only occasional traces of Cu cloud. These conditions persisted until 1700 when the skies quickly clouded over to 100% As that persisted until the end of the day. Winds were again light to moderate westerlies aloft, and temperatures rose from -6C to 5.5C. Once again the morning was very quiet and Cliff saw the first GOEA only at 1213 just before I arrived at the site. The next 2.75 hours yielded only another 7 GOEAs moving low along the western route over
DAY 37 (March 25) (Bill Wilson) Wet snow and sleet at 0700 quickly cleared leaving the ridges clear for the rest of the day with gradually diminishing cloud cover and the temperature rising from 0.5C to 4.5C. Winds were moderate to light SSW to WSW all day. As has become a pattern there was no early movement and the first migrant Golden Eagle did not appear until 1143, with movement gradually increasing and peaking between 1800 and 1900 with the passage of 25 GOEA, and the last and 91st GOEA seen at 1944. All the age-identified birds were adults, and there was just a leavening of non-GOEA species. A drumming male Downy Woodpecker was the first for the season [species #43], and the weather conditions allowed high movement of non-raptor species along the ridges including 92 swans, of which a single flock of 80 at 1048 were Tundra Swans [# 44], and 61 adult white-headed gulls, two of which were identified as California Gulls. At ground level American Robins and Bohemian Waxwings moved north, while the shrike spent its 16th day at the site. (13.75 hours: 431.1) BAEA 2 (82), NOGO 1 (5), RTHA 2 (5), GOEA 91 (1543) TOTAL 96 (1640)
Sunday, March 25, 2007
DAY 36 (March 24) After yesterday’s late movement I was expecting an early start today but all the ridges were obscured and a light rain fell until 1230. Temperatures ranged from 3C to 9C and the ground and ridge winds were moderate S to SSW all day. Even when the mountains cleared intermittent rain continued for much of the afternoon and cloud cover remained 100% with steadily falling barometric pressure not giving too much cause for optimism. In the morning I found 2 adult RTHAs perched in the rain, one of which showed the characters of an “Eastern” red-tail (C.j.borealis). The first migratory GOEA appeared at 1225 and movement was fairly steady until late evening with the 69th bird moving at 1921, allowing most of the 37 visitors to the site reasonable views of the birds. Despite the morning rain Varied Thrushes, Song Sparrows and, for the first time, American Robins were in good voice, and the first two American Crows arrived one day later than average. The over-wintering female and first-winter male Common Goldeneyes seem to have departed the Ponds having been last seen on March 20, but the Northern Shrike stayed around for the 15th straight day. (13.17 hours: 417.3) RTHA 2 (3), GOEA 69 (1452) TOTAL 71 (1544)
Friday, March 23, 2007
Thursday, March 22, 2007
Wednesday, March 21, 2007
Tuesday, March 20, 2007
Monday, March 19, 2007
Sunday, March 18, 2007
DAY 29 (March 17) Strong SW winds kept me awake for much of the night and persisted throughout the day. The temperature was already 9C when I arrived at the site, rose to 11C and was still 8.5C at 2000. High cloud cover again provided excellent viewing conditions. The break in the GOEA flow continued from yesterday evening, however, and the first bird was not seen until 1117 and continuous movement didn’t start until after 1400. After that the flow of adult GOEAs was almost continuous, with the birds generally moving at considerable altitude and often disappearing into the base of Cu clouds that were above 3000 m, at least 1.5 km over our heads! The highest hourly count was 1600-1700 when we counted 91 GOEA and the first Gyrfalcon of the season [# 36]. The last GOEA was still high in the air over
Friday, March 16, 2007
Thursday, March 15, 2007
Wednesday, March 14, 2007
Tuesday, March 13, 2007
Monday, March 12, 2007
DAY 23 (March 11) (Bill Wilson) [NOTE: change to Mountain Daylight Time: all times cited are now in MDT] Moderate W to WSW winds and temperatures from 7C to 11.5C produced excellent migration conditions in the morning and early afternoon, and 45 GOEA migrated between 1012 and 1419. Rapidly falling pressure indicated that the weather was not going to last, and rain started at 1615. Soon after, at 1630, two Great Horned Owls were singing north of the site: the first to be heard this season. (10.08 hours: 255.1) BAEA 1 (28), GOEA 45 (216) TOTAL 46 (248)
Sunday, March 11, 2007
DAY 22 (March 10) Moderate to strong downslope SW winds again persisted all day, with Cu and As cloud again making for excellent viewing conditions. Raptor movement was fairly strong and persistent between 0925 (the earliest yet) and 1600, when falling pressure and increasing cloud cover coincided with a dwindling eagle movement in the late afternoon. The total of 84 GOEA was the highest yet this season, with 38 birds moving between 1200 and 1400: the total included 1 subadult and 1 juvenile bird. Early in the morning 2 Northern Pygmy Owls (presumably a pair) were perched south of the Ponds, while a Great Horned Owl was seen occupying the Great Blue Heron nest that it used last year. The first skein of 7 migrating Canada Geese moved high to the north over
Friday, March 9, 2007
Thursday, March 8, 2007
Wednesday, March 7, 2007
Tuesday, March 6, 2007
Monday, March 5, 2007
DAY 16 (March 04) (Bill Wilson) The warmest day so far (2o-8.5oC) with light to moderate W winds aloft and generally good cloud conditions, but only 4 migrants: 1 BAEA and 3 GOEA. The total of 12 bird species seen was the highest this season and included a large owl (Great Horned or Barred) flushed late in the day south of the site in rapidly fading light. The Northern Pygmy Owl was again present early in the morning. (12.33 hours: 171.5) BAEA 1 (14), GOEA 3 (18)
Sunday, March 4, 2007
DAY 15 (March 03) Downslope wind conditions developed overnight raising the temperature to a high of 7oC and producing WNW moderate to strong upper winds all day, which combined with a good Cu/As cloud cover should have produced excellent migration and observation conditions. Only 2 adult Golden Eagles and a single Bald Eagle moved, however. I suspect that snow conditions on the Plains to the south may be delaying the emergence of ground squirrels which I believe adult Golden Eagles need as “fuel” before embarking on the migration to
DAY 14 (March 02) Most of the day was cloudless with only occasional bands of Ci moving from the west making observing against a plain blue sky challenging. Temperatures ranged from -22oC up to -1oC, and winds were light to moderate, generally from the SSW. By 1218 I had seen 2 BAEA and 3 GOEA (all adults) and it appeared that a good day was in prospect; however, only one more GOEA moved, at 1728, despite the conditions apparently remaining constant. The gap was filled by watching a Mountain Goat high on a crag of the
DAY 13 (March 01) The weather was similar to yesterday’s with very light variable ground winds until 1130, then N to 20 km/h, with the upper winds light westerly. After light snow finished at 1030 the day was mainly sunny but the high temperature was only -5.5oC. A total of 6 GOEA migrated between 1510 and 1614 suggesting that the migration is finally getting started. Our first Northern Pygmy-Owl of the season sang early in the morning south of the Ponds, and a single Common Redpoll flying over was just the second finch species (and individual!) of the season. (11.66 hours: 135.7) GOEA 6 (9) TOTAL 6 (19)
DAY 12 (February 28) The temperature went from a low of -21oC at 0700 to a high of -1oC at 13:00, but subsequently the winds that had been very light became northerly eventually gusting to 30 km/h and reducing the temperature to -8oC by 1800. Despite the opposing winds 2 GOEA moved to the NW along the
DAY 11 (February 27) North winds gusting to 26 km/h all day and despite mainly sunny conditions the wind combined with a high of -5oC made observation uncomfortable. Not that there was much to observe again: no raptors and only three bird species plus a fresh track of a Ruffed Grouse: the first sign of the species this year. The paucity of Ruffed Grouse together with low numbers of Snowshoe Hares and American Red Squirrels probably explain the total absence of resident Northern Goshawks in the area so far this year. (9.0 hours: 112.3) No migrants (11)
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2007
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March
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- DAY 42 (March 30) An almost exact replay of yester...
- DAY 41 (March 29) There was Chinook cloud all day ...
- DAY 40 (March 28) Barometric pressure increased si...
- DAY 39 (March 27) The storm that dumped snow on Ca...
- DAY 38 (March 26) Cliff’s morning shift was finall...
- DAY 36 (March 24) After yesterday’s late movement ...
- DAY 35 (March 23) Again there were strong winds al...
- DAY 34 (March 22) Strong westerly winds all day wi...
- DAY 33 (March 21) The first full day of spring sta...
- DAY 32 (March 20) The day started at 0C and light ...
- DAY 31 (March 19) Another odd day for weather with...
- DAY 30 (March 18) (Bill Wilson) Upslope conditions...
- DAY 29 (March 17) Strong SW winds kept me awake fo...
- DAY 28 (March 16) The day started calm and -2C but...
- DAY 27 (March 15) ….and a better day it was, once ...
- DAY 26 (March 14) Snow and low cloud in the mornin...
- DAY 25 (March 13) North winds continued until 1030...
- DAY 24 (March 12) Cliff took the morning shift and...
- DAY 22 (March 10) Moderate to strong downslope SW ...
- DAY 21 (March 09) Again upper winds were moderate ...
- DAY 20 (March 08) Winds were similar to yesterday’...
- DAY 19 (March 07) The warmest day so far with the ...
- DAY 18 (March 06) The temperature at 0700 was 6oC ...
- DAY 17 (March 05) Another warm day (2o-8.25oC) whi...
- DAY 15 (March 03) Downslope wind conditions develo...
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