Tag Archives: census

one day of summer

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Clear skies. Light wind. Glassy seas. 9’C

DND blast: 1055, 1 medium blast

DFO has decided to extend our contract for the recreation fishing count. It starts again on December 1st, and continues until March.

The Canada Geese returned today, hopefully they don’t stay long, and I would prefer it if they stayed off my paths. I was told that the Sea lions leave this time of year, but there’s no sign of it happening yet, with over 1000 Sea lions still in the reserve. Maybe it’s because we have had such a mild Winter, with very few storms. They are mostly out on the Cobble beach on the South side of Greater Race and South Rocks. There are only a few by the jetty. The male elephant seal is still lounging on Middle Rock in easy view of Camera 5 on the West Bluff.

Animal Census
Stellar Sea lion: 479
California Sea lion: 555
Harbour seal: 47
Elephant seal: 1
Gulls: 159
Cormorants: 99
Oster Catcher: 4
Black Turnstone: 6
Eagle: 1
Raven: 1

-Started ‘Spring cleaning’ Keeper’s house for the shift change
-Prepped Science House for tomorrow’s group of students

storm warning in effect!

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Light SE wind in the morning. 3ft East swell.
Midday it switched to 25 kts West.
Late afternoon it was blowing 45 kts West. With a 5ft+ West swell.

Bird Count
26 Canada Geese spent the day sheltering from the storm on Greater Race Rock
670 Adult Gulls + 96 Juvenile Gulls = 766 Gulls total
20 Oyster Catchers
136 Cormorants
I don’t know where the Turnstones and Sparrows hide during bad weather

Screenshot 2013-11-03 09.43.35

How I counted Birds: The nice thing about bad weather is that it forces all the birds to come to Greater Race Rock because of the waves surging over the outer islands. They also tend to sit in organized groups when it’s really windy. So I took photos of all the groups of birds and using a ‘cell counter’ macro in a great free program called ImageJ I counted all the birds and tallied the results.

 

[Daily Marine Conservation Link]
Sea stars up and down both coasts of North America are experience a mass die-off event now called Sea Star Wasting Syndrome. In recent years the populations of sea stars has been extremely high in the Salish Sea, and in September 2013 reports of mortality events started coming in from divers. A collaborative research effort is now underway and the Vancouver Aquarium is hoping that divers start to participate in some Citizen Science.
The Howe Sound Research and Conservation team is tracking this event by mapping observations of healthy and sick sea stars  but they need data! So if you see any sea stars while diving report it to this website

 

 

 

Christmas Bird Count at Race Rocks: Dec.29, 2012

Gallery

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This gallery contains 2 photos.

In most years since 1997  we have been able to contribute to the Christmas Bird Count for the Sooke/Victoria area. This website contains all the past records: This year, Garry Fletcher was picked up with the station boat by the … Continue reading →

Changes in the weather

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The first gentle sou’east weather pattern with clouds and rain occurred in the last few days. The rain is most welcome to wash away a summers worth of gull and pinniped excrement. This island can be smelled from a kilometer away!

At the edge of the world…

Surrounded by ankle-biters!

About 2/3s of the sea lions have left since the weather change. We are down to around 140 animals, perhaps 75 are Stellers down from the 175 of 10 days ago. Californians make up the remainder down from 225. Quite a few juveniles have showed up in the last week.

 

More birds are showing up. In the last few days several Harlequin ducks and a few dozen cormorants returned to dot the shoreline with the oystercatchers. Flocks of Bonaparte gulls feed on minnows in the eddies, forced to the surface from the deeper water by murres and rhinoceros auklets. Killdeers are spending the nights here. I hear them when I shut down the generator at night. Close to 30 sparrows are flitting about, and yesterday a few eagles and ravens were hunting and scavenging. Late developing gull chicks are on the menu. The flock of turnstones forages in the sea lion haulout ignored by the sea lions.

Tour boats are becoming less frequent and sport fishermen are waning too… yesterday for example a pod of orca passed with only 2 boats watching them rather than 8-10.

Animal Census

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Species Current Population (Est)
Stellar/Northern Sea Lion 175
Elephant Seal 8
Harbour Seal 200
California Sea Lion 200
Glaucous-winged Gull 150
Herring Gull 30
California Gull 6
Surfbirds 1
Black Turnstones 40
Western Grebe 2
Brandt’s Cormorant 30
Sparrows 12
Horned Lark 5
Harlequin Ducks 1
Canada Goose 8
Bald Eagle 1
Black Oyster-catcher 10
River Otter  1
Pearson Students/Staff  16
Race Rocks Eco-Guardian  1
Rhinoceros Auklet  100
Common Murre  100

Sea Lion Madness

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Since the gale on Saturday night, about 75 Steller and 150 Californian sea lions have been hanging out under my window in the shelter of the house. It is hard to describe just how loud and smelly it is. I wish you could witness it for yourself! Well you can at: http://www.racerocks.com/racerock/video1frame.htm

Here are a few pictures. The Steller bulls (Eumetopias jubatus) are particularly impressive. Some of them weigh in at 1000 kgs.

Huge Steller Bull

 

 

 

 

 

 

Steller in the Middle

 

 

 

 

 

 

 

Sea Lions are extremely social and appear boisterous and argumentative. Smaller individuals will always move for the bigger ones, though they roar, growl and hiss in protest. Clashes are very frequent but damage is rare. Most of the contact actually involves just the whiskers (vibrissae), though nips to the skin do happen. Usually a smaller one will snap back in defence then lurch away across the backs of the sleeping neighbours who lazily complain til the commotion stops and they drift back to sleep. 30 seconds later it happens again… all day long and most of the night too!

Sub-adult males playfighting

Orcas spotted

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Orca’: 6, ‘A pod of around 6-8 orcas passed W to E through Rosedale Reef this morning..
California Sea Lion’, 1
Orca:  8, ‘At 2025hrs PDT a pod of orcas was spotted heading E to W through Race Passage against the flood current. Seven eco-tour boats were in pursuit.’, ‘Adam’, ’20:28:24 ,

November Gulls

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Ryan Murphy took this shot from the top of the tower. Race Rocks is an important winter roosting place for several species of gull. He did this image in high resolution so that it can be magnified considerably: This is the distribution of them on the south-west corner of Great Race Rocks, the main island of the Ecological Reserve. The Science house, (originally the assistant light-keeper residence) is shown on the right.

RM-Nov1120094096578320_a501b51974_b

Gulls at Race Rocks , November 11, 2009–photo by Ryan Murphy, Ecoguardian.