Tag Archives: moulting

Molting female elephant seal

Posted on by

Wildlife notes:

I felt a bit odd doing it but I photographed the molting elephant seal’s private parts. It is a She, so there may be some variation in the stated molting dates (1, 2) based on sex and maturity, at least at this northern location.

Her bottom end

His bottom end

An opening only he has

A few least sandpipers and a ruddy turnstone were foraging in the vegetation away from the shore. The sandpipers are such small birds. I was surprised to see them darting around in the gale force winds. The high winds didn’t put a damper on the gulls either.  I watched a small seagull chick jump off a rock to escape with its life as a fight ensued above him.

Least sandpiper

Ruddy turnstone

A seagull chick escaping with its life.

Facility work:

  • cleaned solar panels
  • topped up battery fluids
  • cleaned Keeper’s house windows

Vessels:

2 ecotourism, 1 private

Weather:

Overcast and fog in the morning. Periods of fog throughout the day.  Strong breeze in the morning, gale force in the afternoon, building to 38 knots with gusts of 43 at 19:00. Daytime temperatures: minimum 12, maximum 15 degrees.

August 24 and 25

Aside

On Wednesday, a Coast Guard Helicopter arrived with a repair crew to deal with the foghorn.  While the Glaucous-winged Gulls around the helipad were disrupted temporarily, and many California Gulls on the Middle Islands took to the air, most were back in their places within a few minutes. The marine mammals from harbour seals to elephant seals were relatively unaffected, with the exception of several Steller’s sea lions which briefly moved from the jetty area.  They returned within 10 minutes of the helicopter’s departure. Although the foghorn was given a clean bill of health in the good weather, it failed again on Thursday when the fog lasted several hours. The Coast Guard was notified.

Several branded sea lions are being seen.

A Common Raven (not common on Race Rocks) flew over the island around noon.

Census numbers show changes in the birds that have been breeding here. Most of the PIGU have moved on now that young have fledged. Likewise, GWGU numbers are dropping as young gulls take to the air.

Harbour seals and shorebirds have been adjusting to increasing presence of sea lions, with the former loafing more on the outer islets, and the shorebirds bunching up more against the rocks on the east of the island rather than on the beach.

This will be my last post as relief ecoguardian this year. It’s been a pleasure to be here again amongst the wildlife. I hope my personal project–renewal of the compost–will be appreciated by the ecoguardians who follow. For a more personal and detailed look at life as a relief ecoguardian, please check out my blog at http://nightingaleadventures.blogspot.ca

Ecological Notes:

  • The young elephant seals appear to have moved on. The alpha male continues and has started his molt, moving between the Science Building for resting and the jetty for relief.
  • Passerines seen in the last two days were Brown-headed Cowbird and Common Raven.
  • Branded Steller’s sea lions (882R, 998E, 431Y, and 486Y) and 1 branded California sea lion (V29) were seen during census on Wednesday.  882R and a new California sea lion (U958) were seen on Thursday. The latter also visited Race Rocks in 2020.
  • Bird action on the water over the last two days, with many birds feeding on the tide lines.
  • 2 California sea lions breached the fences on Thursday Both were escorted back to the other side of the fences.
  • See photos below for more ecological sightings.

Census (Wednesday, August 24):

Mammals

  • Elephant seal: 1 (1 adult male)
  • Steller sea lion: 210 (including branded (882R, 998E, 431Y, and 486Y)
  • California sea lion: 343 (including branded V27)
  • Harbour seal: 237
  • Sea Otter: 1
  • Harbour porpoise: 14 (to the west of the reserve)

Birds

  • Black oystercatcher: 5 (4 adults 1 chick )
  • Killdeer 1
  • Black Turnstone: 85
  • Surfbird: 10
  • Common Murre: 300, plus another 550 beyond the reserve
  • Pigeon Guillemot: 28
  • Rhinoceros Auklet: 8
  • Heermann’s Gull: 2
  • California Gulls: 800, plus another 500 beyond the reserve
  • Glaucous-winged Gulls: 343 adults 141 chicks
  • Pelagic Cormorant: 1
  • Brandt’s Cormorant: 11
  • Common Raven: 1
  • Brown-headed Cowbird: 1

Weather:

  • Yesterday (Wednesday, August 24):
    • Sky: Brief period of fog in the morning, then clear
    • Wind: Variable calm-25 kts
    • Sea: rippled to 2′ chop
    • Temperature Low 12oC, High 18oC
  • Today (Thursday, August 25):
    • Sky: Foggy until mid-afternoon, clear and sunny to overcast
    • Wind: W/WSW 16-37 kts
    • Sea:  light chop turning to high waves by evening
    • Temperature Low  12oC, High  20oC

Facility Work:

  • Solar panels cleaned daily. Windows washed.
  • Fence line visually inspected and several posts put back into place.

Vessel Traffic:

  • Many Canadian ecotour boats have been nearby and heading through the waters of the ecological reserve. Cruise ships are going through daily.

Here are photo highlights from the past two days. Click on the photos for larger views and captions.

431Y remains at Race Rocks

486Y still on Race Rocks

882R branded at Rogue Reef, OR in 2011

998R still on site

Sea Otter is back in the kelp off the east side of Race Rocks.

Foghorn repair crew landing

Coast Guard crew cleaning their solar panels.

Alpha male elephant seal beginning his annual molt.

Steller’s sea lions

California Gulls circling during helicopter approach

Marine mammals were unperturbed by the helicopter.

Adult and some juvenile gulls departing as helicopter landed.

Youngsters gathered into creches when the adults left due to helicopter landing

It didn’t take long for the gulls to resume normal activities.

Alpha male elephant seal beginning his annual molt.

Alpha male elephant seal beginning his annual molt.

Alpha male elephant seal beginning his annual molt.

Brown-headed Cowbird

U958 was branded in Astoria, OR in 2015 and was previously seen at Race Rocks in 2020.

Surfbird molting from its breeding plumage.

Neck wound caused by entanglement.

Fence breach!

California sea lion branded at San Miguel Island, California in 2010.

Female elephant seal

Posted on by
Another female elephant seal arrived and we now have three molting on the island..
Elephant seal pups: The four pups are getting closer to the water.
Canada geese. The geese are nesting. Some have laid eggs already. The river otter is trying to find the nests as are the gulls. The geese are getting aggressive to anything that gets close to the nests.
.
Visitors:10
Pearson College students over to study shoreline invertebrates. With the moon getting fuller the tides are very high and very low. This makes for perfect beach walking and shoreline classes for the students.
Facility Work With the help of a couple students, the cleaning continues on the sides of building today.
Vessel Traffic Three Eco-tour boats doing respectful viewing.
Weather Events:Flat water and light wind
Weather– Current: http://www.victoriaweather.ca/current.php?id=72
Weather–Past:  http://www.victoriaweather.ca/station.php?id=72
 

Otter Observations, Seagull Takeover!

Posted on by

Today’s Weather:

  • Sky Clear, blue (very foggy in morning and evening)
  • Visibility 10+ NM (less than 1 during fog)
  • Wind 10-20 knots W
  • Sea state: calm, slightly rippled

Marine Traffic/Visitors:

  • Yesterday Greg visited to drop off some supplies, as well as on Thursday
  • Less than 10 whale watching boats per day recently
  • Minimal pleasure craft activity and the regular stream of fishing vessels, and larger ships

Ecological Observations: 

Due to amount of nesting birds and chicks, we’ve been going outside only when necessary as our presence seems to bother them quite a bit. Some of the windows facing the action have been getting, ahm… ‘fogged’ despite our efforts to collect rain water and scrub them when we can!

  • One of the two elephant seals molting has left the island, and the last pieces of skin are falling off in big dry pieces for the one remaining.
  • Seagull season is getting a bit violent: there are many deceased and dismembered seagull chicks around the island. We don’t usually see it happen, but we think that they are being killed by other adult seagulls protecting their territory and chicks.
  • While walking over the rocky area near the jetty to recover a significant amount of plastic that floated in, we noticed some pigeon guillemot eggs hidden in a rocky crevice! This is the first time that we have spotted a confirmed nest, although we had suspicions as we have been seeing them with fish and waiting for us to leave (before they carry it into their nest).
  • We found a pigeon guillemot near the jetty under camera five- it appeared to have been eaten by a bird of prey or perhaps an otter. It had been partially plucked of its feathers and eviscerated.
  • We’ve been noticing more harbour seal pups! We’re not sure if this is due to there being a increase in the total pups around, or we are seeing them closer than usual due to the low tides this week. We spot the pups with their mothers taking shelter from heavy currents in the more sheltered area between us and rosedale rock.
  • Yesterday we noticed that there were quite a few dead seagull chicks dragged underneath a diesel tank waiting for removal near the jetty/crane shed. We looked under the walkway where we often see the river otter duck through the rocks, and there were quite a few there as well. This explains the cacophony we sometimes hear at night!
  • We were contacted by an eco-tourism company who shared with us that they had spotted “ollie” the sea otter holding the body of a river otter. It sounds like he has been noted as particularly territorial before, so this is not a surprise, although this is the first time we have heard this during our time on Race Rocks.

We’ve been saving the fresh water that drains from the firehoses after pumping from Second Nature’s tank, and using it to fill the pressure washer tank. We can use this to mist the panels and scrub them by hand to remove the seagull waste that builds up so quickly this time of year. Every little bit of sun counts!

What a Windy Weekend! (seagull chicks, census)

Posted on by

Today’s Weather: 

  • Sky partly cloudy (thick fog until late afternoon)
  • Visibility 10 NM (less than 200 m until late afternoon)
  • Wind 30-35 knots W
  • Sea state: swells up to .5 m, whitecaps

Marine Traffic/Visitors: 

  • Not many pleasure crafts this weekend as it was very windy (up to 40 knots!).
  • Greg visited today to deliver supplies
  • More whale watching boats this weekend than we have been seeing, around 5 per day.

Ecological Observations:

  • The seagull chicks have started hatching! Only a few nests have hatched so far. We have observed the chicks asking for food and the parent not feeding them. We wonder if there is enough food available to support them all through this nesting season.
  • One of the first nests to hatch had 3 chicks, but now they are nowhere to be seen. We are observing with an investigative eye as nesting season progresses, as we observed many instances of adult birds cannibalizing each other’s chicks last year.
  • One of the four goslings was eaten by seagulls on Saturday afternoon. The remaining three seem healthy and strong.
  • Not many visiting birds this past few days, perhaps due to the high winds.
  • Many harbour seals hauled out on outcroppings during the notably low tides over the past couple of weeks. The young seal pups are still keeping close to their mothers but we have not seen any still nursing.
  • The oyster catcher chicks are growing at an impressive rate! They seem to be doubling in size almost every week. They are now old enough to venture away from the protection of the rocky areas and explore the intertidal with their parents.

Census: 

  • 2 Male elephant seals moulting
  • 500 Seagulls, handful of chicks
  • 16 Adult geese
  • 3 Goslings
  • 10 Adult black oystercatchers
  • 3 Black oystercatcher chicks
  • 56 Harbour seals

Throughout the week we also observed pigeon guillemots, eagles, and a pair of swallows. The sea lion who was here alone over the past weeks seems to have moved along.

Stunning Weather, Spring at Full Force!

Posted on by

Weather:

  • Visibility 15+ NM
  • Sky clear
  • Wind 5-10 knots SW
  • Sea State: calm

Marine Traffic/Visitors:

  • 2 jet skis yesterday evening, 1 kayak this morning, 1 eco-tourism vessel yesterday
  • Greg today with supplies (thanks Greg!)
  • 1 boat inside the reserve fishing this morning- Greg stopped to remind them that they were within the boundary on his way
  • Many pleasure crafts just outside of the reserve boundary

Ecological: 

  • Consistent eagle presence as the seagulls continue to return, and food is plentiful in the water
  • The geese seem to be getting pushed out of their territory by the seagulls. The seagulls have continued to steal goose eggs when they get an opportunity, thus there are only 2 remaining nests with eggs. The geese have started to spend more time on the water, and often leave during the day.
  • The pineapple weed has been growing at an impressive rate! Most of the grassier areas on the island are covered by the fluffy foliage.

 

Bustling Wildlife

Posted on by

Weather:

  • Visibility 10 NM this morning, 15+ NM this afternoon
  • Sky overcast in morning but clear this afternoon
  • Wind 20-30 knots NW-NE
  • Sea state: white caps (.25m), fast moving ripples

Visitors/Boats:

  • Greg and Nick on Monday
  • Greg and Nick on Tuesday
  • Greg and a technician for generator maintenance on Wednesday
  • Greg and Nick this afternoon (Thursday) 

Aside from this there have been very few vessels aside from commercial/shipping traffic. Today a couple of sailboats passed by despite the astounding wind gusts (all a fair distance away).

Ecological:

  • There have been 4 eagles in the reserve daily on average, both juvenile and adult. They typically perch on Rosedale Rock to our SE, but we have been spotting them on the webcam tower, crane, and diesel tank near the power building. The juvenile eagles seem to be more interested in Great Race Rock, while the adults tend to stick to the outcroppings. Occasionally they swoop over the reserve, prompting the seagulls to rise into the air to avoid becoming lunch!
  • The geese continue to protect their nests but no new eggs have been observed.
  • The elephant seals have settled to complete their moult, all in various stages. The remaining pup is still here, and spends most of its time on the jetty away from the others.
  • There is a sea lion with a significant head/neck wound that we have been seeing daily. It looks like it has been tagged by the Vancouver Aquarium, so we are wondering if it has been disentangled and tagged at the same time.
  • Yesterday we spotted a killdeer, a type of plover. We’ve never seen one here before!

Repairs/Maintenance:

  • We filled the underground cistern with sea water to be desalinated (pumped using the fire pump and fire hoses).
  • To maximize our solar intake we have been keeping the solar panels as clean as possible (when they are covered in bird waste they create much less power). 
  • Juvenile eagle on diesel tank
  • Juvenile eagle on power building
  • The gang
  • Moulting elephant seal skin and fur
  • The gulls continue to arrive for nesting…
  • … and defend their territory fiercely!
  • a breeding pair of geese resting
  • This one has a sore leg from a fight!
  • The youngest nest
  • Tag of the latest arrived elephant seal
  • Pigeon Guillemot
  • Sea lion with healing entanglement wound
  • Killdeer (adorable!)
  • Juvenile bald eagle perched on the crane

April 11 and 12 – Weekly Census

Posted on by

Wind: yesterday W-S 0-32 knots, today W-SE 2-17 knots
Sea State: both days calm
Visibility: yesterday 10-15 NM, today 15 NM
Sky: yesterday partly cloudy then clear from mid morning, today clear
Temperature: yesterday 8-14 °C, today 7-14 °C
Atmospheric CO2: 416.33 ppm (recorded by NOAA at Mauna Loa Observatory, Hawaii)

The lawn in front of the house got busier this morning with nine elephant seals, two more than yesterday. A tenth seal, the pup, was near the jetty. The two new arrivals have green tags on their tail flippers. One is a male tagged C887. The other is a juvenile tagged G512 on the right flipper and E779 on the right. I will update the information on age and past sightings when I hear back from the researchers. The green tags signify the elephant seals were tagged at Año Nuevo, south of San Francisco.

[UPDATED April 13: I heard back from Dr. Patrick Robinson, the researcher from Año Nuevo Reserve. The elephant seal with green tags E779 and G512 was tagged as a pup in February 2019, where he was born at Año Nuevo. This is the first time the male juvenile has been spotted outside of Año Nuevo, where he was last seen as a weaner in March, 2019. The elephant seal with the green tag C887 is a juvenile male that was born at Año Nuevo in February 2017. He has been seen at Race Rocks in the month of December in 2017, 2018 and 2019.]

There was one boat seen in the ecological reserve on each of the past two days, a pleasure boat yesterday and a sailboat today.

Census results observed this afternoon at low tide:
10 elephant seals (1 female pup, 1 female juvenile, 1 juvenile, 2 sub adult males, 5 female adults)
16 steller sea lions
91 california sea lions
1 sea otter
72 harbour seals
5 bald eagles (2 juveniles, 3 adults)
16 Canada geese
1 black brant goose
99 gulls (mostly thayer’s)
17 pelagic cormorants
4 brandt’s cormorants
5 double-crested cormorants
6 black oystercatchers
24 pigeon guillemots
7 harlequin ducks
2 surfbirds
5 black turnstones

  • Two eagles on Turbine Rock and a colourful sailboat passing through Race Passage.
  • Newly arrived juvenile elephant seal tagged G512 and E779
  • Green tags G512 and E779 on the juvenile elephant seal.
  • Newly arrived sub adult male elephant seal tagged C887
  • Green tag C887 on the sub adult male elephant seal
  • Black brant goose
  • Four elephant seals waiting for the water to come to them
  • Newly arrived juvenile seal exploring the boardwalk
  • A view from the top of the lighthouse this afternoon of the clear water of the east bay. A group of sea lions can be seen on the rocks.
  • These lucky gulls won of the goose egg hunt

April 7 and 8

Posted on by

Wind: yesterday W 0-34 knots, today E in am SE in pm 0-16 knots
Sea State: both days calm
Visibility: yesterday 10-15 NM, today 15 NM
Sky: yesterday partly cloudy in morning, clear onwards, today clear
Temperature: yesterday 8-11 °C, today 6-13 °C
Atmospheric CO2: 415.60 ppm (recorded by NOAA at Mauna Loa Observatory, Hawaii)

A sea otter spent most of yesterday afternoon in the South Channel between South Islands and South Seal Rocks. It ate clams, cleaned itself and rested on the rocks. When it dove underwater to grab some more food, I approached to get a closer view from an indent in rocks on South Seal Rocks. See the 16 second video below.

The last elephant seal pup appears to have left today. She was swimming in the jetty bay for most of the day. When I went out in the boat this afternoon, she was floating by the rocks to the north of the jetty bay. When I returned, she wasn’t there anymore or on the land. All three surviving pups left the island within a week of being three months old. The two others haven’t returned. Presumably, they are off feeding themselves after teaching themselves to swim over the past two months, since they weaned from their mothers.

I moved four wheelbarrows of the remainder of this winter’s supply of wood from the cupboards beside the Energy Building to the basement of the house. That wood should last for any cool or damp days of the spring or fall. I fixed some loose boards on the winch deck and boardwalk. Over the winter, the sea lions were rough on that deck.

A single blast was heard yesterday morning just after 11:00, coming from the demolition training area at Rocky Point.

One pleasure boat was seen in the ecological reserve this evening. The Race Rocks station boat was out this afternoon for a quick trip to Pearson College to pick up groceries.

  • Just a few big chunks of fir and skin around her middle remain to moult. T562/T653 is almost done.
  • Sea otter swimming in South Channel in the clear water, as seen from the lantern room of the tower
  • Deconstructed shore crab
  • Watching a sea otter from the south side of the island yesterday evening. See the video below.
  • The full moon rising yesterday evening just after sunset
  • When I headed out in the boat in the late afternoon, the youngest elephant seal pup was floating in the water by the rocks, near a resting california sea lion.
  • The view of the ecological reserve coming out of Pedder Bay, passing Bentinck Island.
A video of a sea otter cleaning itself on the south end of the island. A california sea lion pops up twice.

March 30 and 31

Posted on by

Wind: yesterday variable 4-40 knots, today W 3-25 knots
Sea State: yesterday up to 1 m chop, today rippled
Visibility: yesterday 10 NM, today 15 NM
Sky: yesterday partly cloudy with rain in morning, today clear
Temperature: yesterday 5-8 °C, today 5-7 °C
Atmospheric CO2: 415.65 ppm (recorded by NOAA at Mauna Loa Observatory, Hawaii)

I took soundings on all the water and fuel tanks as well as other notable measurements for the month end report. Here are some of the numbers. The desalinator produced 6,650 L of water, which was used mostly for pressure washing the buildings and other cleaning. 540 L of diesel was used to run the generator to top of the batteries, when there wasn’t enough sun to charge the solar panels. The generator ran for 141 hours over the month, for an average of 4.5 hours/day. There were 24 visitors (16 unique visitors) to the island over the course of the month.

No boats were seen in the ecological reserve over the past two days.

See the gallery below for views around the island.

  • A high concentration of harbour seals on Turbine Rock at low tide
  • A small midden of deconstructed mossy chitons
  • Five out of the six elephant seals going for a dip in the jetty bay
  • Elephant seal pup buddies
  • Another view of the post sunrise sunny rain, from inside the energy building
  • Canada geese reflecting pond
  • A post sunrise double rainbow, while it was sunny raining
  • Different stages of moulting. The elephant seal on the left has got rid of most of the fur and skin on her head, except a patch on the nose.