Tag Archives: predation

Visit from a Predator

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Ecological Happenings

  • Barred Owl in the reserve today. Its’ prey were found (one small bird near the lighthouse and a gull near the student house). Gulls and smaller birds were much fewer today.
  • Juvenile elephant seal and accompanying adult seal returned today.
  • South Seal Rocks is particularly crowded with the Stellers that have moved from other surrounding rocks.
  • California Sea lion brand 8456 spotted

Marine Vessels

  • Two tour boats
  • One pleasure vessel
  • 10 Canoers
  • A helicopter flying in good range of RR

Maintenance

  • Continuing to experience challenges with the water system. Next steps are to check the pumps and piping.
  • Boat maintenance and clean out.

No visitors today.

Troglodytes Return to the Rock

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The mostly overcast sky of early morning gave way to sunshine and clear skies for a beautiful transition day from summer to fall. The wind didn’t do much all day. The barometer rose to over 1016 hPa continuing yesterday’s rise but has now faltered and is starting to drop again. Forecasters are calling for winds to continue from the west tomorrow and then switch to east with increasing cloudiness, showers and dropping temperatures as the week progresses.

There were Humpback Whales just south and then east of Race Rocks most of the day. Some of the whale watching fleet visited them and the Ecological Reserve. A total of 15 visits were observed by commercial operators today and there may have been more mid-day when I went ashore briefly. By evening, there were four Humpbacks in the same area.

Ecologically, a change of season continues to be in the air. Flocks of Surf Scoters are passing through Race Rocks heading east. Cormorants are amassing in roosting areas on North Rocks, South Islands and Great Race and all three species are using the reserve to roost. More gulls arrive daily and huge multi-species feeding flocks are forming in conjunction with forage fish being driven up by diving birds like cormorants, Rhinoceros Auklets and Common Murres. These two species of alcids are often diving just outside Race Rocks but this morning on slack tide I saw a string of Common Murres in reserve, on the water. The adult males still have chicks with them.

There are also multi-species gull feeding flocks associated with sea lions’ salmon kills as observed earlier in the season. This morning I watched a California Sea Lion thrash what looked like a coho at the surface and then swallow it, head first, using a little air-born, porpoise-like action to get the tail down the gullet.

The bull kelp seems to still be growing and the beds are much more extensive than I remember them being this time last year. There is always lots of inter-annual variability in kelp cover as many factors affect its productivity and biomass including seawater temperature and salinity, light levels, nutrients like nitrogen, storm action and of course grazing. In the reserve, sea urchins and abalone are important grazers of kelp and they are also on the top of the menu when it comes to favorite food items for Sea Otters.

On land, Dark Eyed Juncos are flitting about with Fox Sparrows and Savannah Sparrows. There is a also a visitor back, that I haven’t seen here since last year. A small, but powerful presence in the form of one of my favourite little birds, a Pacific Wren has taken up cave-like residence in the old stone wall under the tower and can be seen going from cave to cave in the wall.

Other than the constantly changing and incredible natural scene outside, work was routine and there were no visitors today.

 

Killer Whales at Dawn

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Although the wind didn’t do much during the day, it came up strong from the west in the early evening with cold fog in its wake. By nighttime it was blowing 25 – 30 knots. The strong wind warning remains in effect and the forecast expects fog to dissipate in the late morning. The barometer made another step down in its week long descent and ended at 1011 hPa. Tomorrow is supposed to cloud over and showers will follow next week.

There were relatively few commercial operators noted in reserve today, only eleven vessels including a dive boat, and two tour boats who are not part of the ‘regular’ whale watching fleet. There were almost as many sporty boats with several speeders noted, including a Pedder Bay rental.

The sea lion numbers seem to be at their greatest early in the morning so I went up the tower first thing to photograph them and while up there noticed three small killer whales in the southwest corner of the reserve and a group of about six milling around in the middle of the Ecological Reserve. The larger animals seemed to be feeding in a back eddy just off Middle Channel between Middle Rocks and West Rocks. Gulls were attracted to where they were which I assumed meant there was food. They slowly traversed the reserve on the same general track as the Humpbacks and L-pod did on Thursday, heading off towards the southeast. The two groups rejoined on the outside of South Islands. It was a pleasure to watch these animals unaccompanied and unimpeded by the usual parade of boats.

Work was routine (interspersed with incredible nature observations) and there were no bipedal visitors.

Fresh Flag Flies

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The day started with fog to the south and west and it soon crept onto Race Rocks. Sun quickly prevailed over fog and it was a beautiful day with high overcast forming late in the day. The wind didn’t do much more than 5 – 10 knots from the WSW in the morning and then turned blew gently from the south before dying off altogether mid-afternoon. It rose again from the southwest as I wrote the blog. The barometer remains over 1020 hPA after climbing slowly for a week. The forecast is calling for showers beginning late this evening, but the larger picture is much sunnier after tomorrow and there is a strong wind warning for westerlies which often bring good weather.

It was much quieter here today with only four whale watching tour vessels visiting the reserve while I was here. Five sports fishing boats transited. All stopped to look at the sea lions and no one was observed speeding in the Rockfish Conservation Area today. There were two vessels that appeared to be fishing in reserve and observations, photographs and data were collected for the enforcement team. Race Rocks is closed to fishing and is part of a DFO-enforced Rockfish Conservation Area. The islets and the sea-floor are protected by the province of BC through BC Parks.

The sea lion moult continues to be the big ecological event on shore but the timing of their visit and choice of haul-out location is no coincidence to what is going on at sea. Most of sea lions are also off foraging for part of the day and the Race Rocks haul-out is in a biological hot spot, which becomes a fish funnel for incoming migratory fish at this time of year. All six species of Pacific Salmon pass right by the front door right and there is a plethora of other species to choose from the rest of the year. Race Rocks is not a breeding haul-out nor is it a true winter haul-out as the sea lions start to arrive in earnest in July and stay into winter and early spring. There are actually some animals here all year but late summer and autumn is the busiest leading up to the peak during the chum salmon run at end of October.

GwGu juv FTThere are still some Glaucous-winged Gulls that have not left the roost but most of them are flying now and there are fewer here every day. That is probably a good thing for them as the predator that is picking them off is taking at least one per day. They are out foraging in groups trying to figure out how to feed themselves.

I went ashore for a couple of hours today and was otherwise busy with routine tasks. There are a lot of chores here and one of the challenges of living at Race Rocks is living sustainably and minimizing our ecological footprint. To do that we are very frugal with electricity and water, compost all organics, even using a composting toilet because when you make your own water by desalination it doesn’t make sense to just flush it away. Both have their chores too. Most of the electricity is generated with solar panels, which brings another set of activities to keep things going. We also pack everything out and are slowly removing unsustainable legacy items left by the light keepers over the years. A favorite chore is putting up a fresh new flag and there is one flying today.

Fresh flag today.

Fresh flag today.

Sea Otter Seen

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The morning weather went from still and overcast at dawn, to clear with a light west wind that brought the fog in for a few hours, then cleared to sunshine for midday. By sunset a high overcast had developed with high altitude clouds piling up on distant mountains and on the horizon at sea. The barometer continued to climb today and reached over 1016hPA.

Wind direction swung around a few times then settled on a blow from the west rising at times to 28 knots. A gale warning forecasts strengths up to 35 knots this evening. Sunday has a 70% chance of showers and the wind is expected to drop overnight to light winds by the afternoon.

Seven whale watching and one tour/party boat were observed working in the Ecological Reserve today. One vessel, Fantasea VI a party boat cum tour boat, according to the sign affixed to it, spent an hour in the Ecological Reserve feeding many, many loaves of bread to the gulls. They were still flinging bread out as they returned towards Victoria. BC Parks act as stewards of protected areas including BC’s Ecological Reserves and they note that feeding wildlife is illegal.

We found the killing ground for Pigeon Guillemots today with the remains of six adults in breeding plumage found near their nesting area. All of them had the neck skin inside out over the head and were the handy-work of the same predator that is feeding on juvenile gulls this week. This might explain the lack of nesting activity by Pigeon Guillemots. I will investigate further to see how many more corpses there are in the greater area.

Chores were routine maintenance and fighting entropy today.

Making Sense of the Census.

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The sun shone through a bit more today even as clouds and much needed rain continued. West winds blew at about 10 knots most of the day as the clouds were pushed steadily inland. The barometer is now back up to where it was last Friday before the big nose-dive into Saturday’s storm. The forecast looks a little brighter for Friday and Saturday before a return to wet and cool.

Whale watching activity in the Ecological Reserve was very subdued today as the black and whites moved north and east yesterday. Only four visits by commercial whale watching boats were observed in the Ecological Reserve. One sports fishing vessel and a couple of rental boats also came through obviously oblivious to the speed reduction zone within the reserve boundaries .

Thursday is census day and here are the results of this week’s animal census.

Steller Sea Lion 497

California Sea Lion 522

Harbour Seal 81

Northern Elephant Seal 2

Sea Otter 1

River Otter 1 seen (probably more)

Southern Resident Killer Whale 7 (during count week)

Biggs (Transient) Killer Whale 5 (during count week)

Humpback Whale 1 just outside of reserve but may have transited border

Canada Goose 4 full time (2 adults 2 goslings) (24 visited once during count week)

Harlequin Duck 1

Double-crested Cormorant 11

Pelagic Cormorant 12

Brandt’s Cormorant 1

Black Oystercatcher 29

Black Turnstone 95

Ruddy Turnstone 1

Western Sandpiper 3

Kildeer 1

Dunlin 1

Glaucous-winged Gull 276 (193 – adults; 83 juveniles)

California Gull 61

Western Gull 1

Heerman’s Gull 26

Peregrine Falcon 1

Common Raven 2

Savannah Sparrow 3

It is of note that there have been no Pigeon Guillemots seen since I arrived. Last year there were chicks, still  being fed by their parents, on the nests in the rubble area just west of the jetty at this time of year and later. I am hoping that the river otters have not been visiting these ground-breeding birds and will look for evidence of what has been going on there.

Maintenance work was routine and the only other visitors to the reserve were the Pearson College students having their orientation by vessel. Courtney kindly delivered paper, which was appreciated as there was none.

Pearson College students doing orientation week activity at Race Rocks Ecological Reserve.

Pearson College students doing orientation week activity at Race Rocks Ecological Reserve.

super friendly philosophy teacher

 

 

 

 

What is going on around the place?

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Is something happening on the rock? Nothing. It ‘s what you could think from the tower top or from the seaplane that flies over almost everyday but at sea level it’s another story. Actually there is so much life by night and by day. Especially the nights are animated: We found 2 more dead chicken bodies, always at the same spot under the diesel tank, always killed the same way and left with all the guts fresh and bloody! Pretty disgusting! The Animal world is rough. We spotted some very violent attacks from adults gulls against chickens. The problem is when chicks run into a neighboring territory they get attacked and can be killed and now that they are trying to fly, they can’t control exactly where they land. When it’ s windy you can observe those flying practice everywhere. The wind helps them and some now manage to get 3 meters high in the air. 3 chicks spend all their day swimming in some shallow water, one parent checking from the rocks and there are there everyday but those are the only ones. Why not the others? Just a few Californian sea lions have landed on the main rock for now. The fence is ready anyway. We have been stock on Race rocks for a few days because of the wind but we kept busy and not bored. At 7:00PM we had 40knots but it slowed down at 26 knots at 8:00. Calm evening

Unusual use of the solar panel water bucket

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It has been a gorgeous summer day, not too warm here with the fresh breeze coming from the ocean. We found another Chick’s dead body under the gasoil tank, which makes the total number to 5 dead ones. We guess that is the job of a river otter because they have all the same look, guts facing the sky? We had Whale watchers as usual around, 15 in the day and in the strait a navy vessel, a tugboat pulling a wood load, and 2 RCMP zodiacs could be seen. Those last days it’s just evident that we have a bigger birds population and new species too like 5 Harlequin Ducks swimming in the south rocks and a flock of around 50 shore birds that could be sandpipers. The young middle size elephant seal was spotted swimming alone in the south rocks which were a pretty busy place, animated all day long by the new little harbor seals. This young one came back and spent the night behind the boat shed. Around 10 AM I saw the spout of whales a few times closed to the green buoy .I never saw the animals by themselves and pretty soon no more spouts.Going to double check the solar panels in the afternoon (getting dirty quickly enough !) I discover for my pleasure that the 5 geese had their neck in the soft water bucket under the panels. Those ones are everywhere ,all the time going back and forth. They even went swimming in the race currents. Amazing busy birds!

 

A Californian Sea Lion on the railway

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Nice weather, almost no wind and very sunny We were expected more wind and it came but late in the evening and raised to around 30 knots. Like usual it was a west wind.
Floyd and Chunk have not been in sight for a while now I would say that Floyd disappeared 7 days ago and Chunk 5 days ago. The little one left 3 days ago. The 2 big one were at that time really slim and it would be not surprising if they would be gone for good. Just the new young female is still around and yesterday we had the surprise to find this little elephant seal (in the rocks) closed to female Californian seal taking a nap on the railway. She was very curious of us and it was really a pleasure to spend time looking at this so gracious animal. She stayed there for at least 5 hours because she was just at the same spot when we came back for the water sampling. We really had to go on the jetty and she couldn’t handle to have us just above so she softly glided in the water.
At the same time closed to the jetty we were the witnesses of the first bath of a gull chicken. Nice! And on the other side you could see 2 beautiful shorebirds called Ruddy Turnstone easy to identify. Lot of life is going on around.
From the eco guardians house windows in the morning I could count 87 chickens. Now they are big enough and are not anymore closed to their birth spot. Actually they are really everywhere and on the high rocky spot too. At date we found 3 dead bodies of young gulls. The last one was on the stairs of the house.
Those days we had a lot of whale watchers around, closed to 20 each day.

Birdy stories

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On Sunday, which was a sunny but windy day, we found one dead chick, the first one and beyond the student house on the rocks we discovered some newcomers, two beautiful little birds. By deduction and with the pictures sent to Garry, we came to the conclusion that they were 2 Western Sandpipers. A change from gulls!
On the 13th when we went to clean the solar panels we discovered the fresh, bloody, half eaten body of a pigeon – guillemot. We think that it was a Sea otter’s job because of the hidden place where we found it. Busy night!