Category Archives: Ecology

Our Last Census Day!

Posted on by

Sunday, September 29, 2024

Today was our last census!!!

We took our coffees up to the tower for the 7am Low tide.

Animal Census:

Birds:

  • Gulls: 1580
  • Cormorants: 22
  • Canada Goose: 22
  • Turnstones:
  • Shorebird: 1

Would love help on the ID of this.. email us if you know!

Mammals:

  • Stellar Sea Lion: 306
  • California Sea Lion: 834
  • Harbour Seal: 81
  • Elephant Seal female: 2

Animal Tracking and Injuries:

Spotted a Stellar Sea lion with fishing line wrapped around his neck ☹

Reported to DFO.

Since we are leaving on Tuesday, we spent the day cleaning the house, and washing the windows.

As well as our daily fence repair. It’s a particularly nauseating feeling to wake up each morning, look out at the beautiful view, and survey the extent of fence damage that has happened overnight…. This is a task I definitely will not miss.

Weather: Sunny all day, Very windy all night (35+ Knts, dropping all day to around 20knts W/SW)

Whale Watching Vessels: 10

Private Vessels: 2

**Loads of Humpbacks hanging about 😊

Elephant Seal Frustrations

Posted on by

Tuesday September 24, 2024

This morning we woke up to fog lapping at the shores of the island. Its honestly very magical to be fully socked in on a rock that you know is completely surrounded by water. But also, this really throws the problem of a malfunctioning foghorn into sharp relief.

We were obviously not alone in this thought, as we read an 8am email from the Coast Guard team who will be out here tomorrow to take another stab at repairing it.

We spent the morning cleaning the solar panels, making the daily fence repairs, and doing some general tidying for the week.

We also tried to capture some more identification photos of the Elephant Seal who has been around. Last week we reported her with my best guess of her tag number based off a couple glimpses from when her tail was at just the right angle.

The group we reported her to responded right away with a bunch of interesting information about her life. She was born in Ano Nuevo California in 2013. She has been spotted there many, many times since then, during the winter months, and has even had two babies of her own!

But they have no sightings of her in other locations up until now! So that is super exciting!

From a Race Rocks perspective, she also seems to be a Newcomer. Elephant seals have full reign of the island, and the guys who visit here often know that, and take advantage of it….. as recorded in many previous blogs,

This gal, however, is hanging down on the rocks on the South side of the island amongst all of her Sea Lion relatives.

In addition, speaking with some of the previous Eco-Guardians, there is usually another seal (Beverly) who is the first to arrive. She has a pink tag.. so we know this is not her. Maybe there is new newcomer on the block….?

The previous eco-guardians also shared this neat image, that shows the tag color correspondence with animal birthplace!

What a cool and simple way to track such amazing animals!

Anyways, I will continue on trying to get a clear tag picture.

Whale Watching Vessels: 10

Private Vessels: 0

Weather: Foggy and Overcast Day, Winds SW picking up to 15 knts in the Evening

Census on a Cloudy Day

Posted on by

Sunday September, 22

Census Day!

This morning, Scott and I headed up to the top of the tower for our weekly animal count.

We added the elephant seal to this week’s survey because she is still sticking around!

Yesterday we beefed up the fence on the West side of the island between the helipad and the generator shed. Since this one isn’t anchored into the bedrock, it has been taking quite a beating from the westerly winds.

Greg also dropped by yesterday and gave us some groceries for the week. The water cistern is quite low, so we have ceased using the desalinator, and are trying to be more conservative than normal with the water. Fingers crossed, Greg will be able to boat over some more water this week!

Today, we checked and topped up the batteries, and tidied up the basement in the main house. I can’t believe we only have a week left on the island!

Whale Watching Vessels: 15

Private Vessels: 4

Weather: Cloudy and Overcast Day, Winds SW picking up to 15 knts in the Afternoon

Animal Census:

Birds:

  • Gulls: 1155
  • Cormorants: 228
  • Oystercatchers: 3
  • Canada Goose: 6
  • Turnstones: 17 ** They are hard to see amongst all the sea lions

Mammals:

  • Stellar Sea Lion: 397
  • California Sea Lion: 780
  • Harbour Seal: 85
  • Elephant Seal female: 1

Elephant Seal!

Posted on by

Friday September 20th

Last night while we were fixing the fence on the South Side of the Island that had been knocked over….Again.. we spotted a seal looking a little different than everyone else

Looking a little closer, we realized it was an elephant seal! Looks like a small female, and she is tagged, though we couldn’t get a good photo of it. We reported it to the biologists from California who implement that specific tagging study.

Also saw a couple more branded Sea Lions who we also reported, as well as a dead sea lion we spotted along the south side of the island at low tide.

Scott has worked his way through the pile of wood piled down near the Jetty, so the next Eco-Guardians will def be warm for a while.

Whale Watching Vessels: 10

Private Vessels: 0

Weather: Mix of Sun and Cloud. Pretty Calm day, wind pretty consistent around 5knts W.

And like everyday this month lots of humpbacks feeding all day!

The Journey of #444X

Posted on by

Wednesday September 18, 2024

Not a huge day facilities wise. We did our daily repair of the electric fences, and chopped a little more wood.

However, we did receive some cool news from Brian Wright, the NOAA scientist who we reported the branded sea lions to. He told us that number 444X, was first tagged in Astoria all the way back in 2016, and he has not been reported since.

This information is super valuable to scientists and managers because it shows what areas are being used by these animals, the extent of their ranges, and how long they can live. (Which for a California Sea Lion is 15 – 25 years!).

Mark and recapture studies are also very important for estimating functional population size, and this type of study design is used for lots of fundamental ecological work. This infographic from FishBio, nicely explains how a mark-recapture study can work in an open environment! Again, this is a good reminder to report any tagged animals you encounter!

Whale Watching Vessels: 20

Private Vessels: 0

Weather: Mix of Sun and Cloud.  Calm during the day, wind picked up to 12kts W

Carduus acanthoides : Plumeless thistle- The Race Rocks taxonomy

Posted on by

from https://racerocks.ca/upkeep-day/

Neha Acharya-Patel  the ecoguardian at Race Rocks identified this new species for Race  Rocks in the log today.

From Wikipedia,  the classification as follows

Scientific classificationEdit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Carduus
Species:
C. acanthoides
Binomial name
Carduus acanthoides

 
Other Angiosperms at Race Rocks.

taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.

 

Upkeep Day

Posted on by

Wednesday September 11

Similar day to yesterday! Did some weeding, weed whacking of the student house, made water and ran the generator.

  • Ran Generator
  • Ran Desalinator
  • Cleaned solar panels
  • Patched electric fence

Whale Watching Vessels: 10

Private Vessels: 1

Weather:  Mix of sun/cloud. Wind 8-12kts.

Census Day!

Posted on by

Sunday September 8th

Today we spent a lot of time on the fence again. We painstakingly went through each section to ensure that charge was being held the whole way through. This was a very tedious process and we still don’t have the voltage up to where we want it to be…. but there have been no pinniped breaches yet, so fingers crossed!

Today, Scott and I climbed the lighthouse tower to complete our first wildlife census. As a marine ecologist, I have a lot of experience counting fish underwater. However, counting over 600 Sea lions that all look like overlapping brown logs or trying to count birds that keep on flying away or are hidden between all the sea lions was way harder. With that said, being a top the tower made everything much easier to see and to conceptualize on a greater scale.

While we were up there we also got to enjoy a couple of humpback whales engaging in tail slapping or “lobtailing” behaviour for well over 30 minutes. It is thought that the sound and force generated by the slaps frighten the bait fish into tighter schools making them easier to hunt. Based off gull activity, there were definitely a lot of bait balls around, so hopefully we will get to see more of this behaviour in the coming days!

  • Water Sample
  • Ran Generator
  • Washed Solar Panels
  • Patched and checked new electric fence
  • Island animal census

Whale Watching Vessels: 25

Private Vessels: 7

Census Results:

Birds:

  • Turnstones: 15
  • Killdeer: 1
  • Gulls: 528
  • Cormorants: 70
  • Oystercatchers: 2
  • Canada Goose: 6

Mammals:

  • Stellar Sea Lions: 115
  • California Sea Lions: 497
  • Sea Lions (Too Far for confident ID): 205
  • Harbour Seals: 63

Weather: Slightly Hazy/Overcast. Wind NW Building all day to ~ 15knts

Race Rocks Ecological Reserve Warden’s Report June 14 2024

Posted on by

Garry Fletcher, ER Warden for Race Rocks visited the reserve on June 14, 2024

Greg Dickinson from Pearson College provided transport in Second Nature for the following group: 

  • Lisette and Mads – Mads is a  former student and both are volunteering at Pearson College
  • Garry Fletcher – Park Warden
  • James Tuohy – future Ecoguardian
  • Ann Nightingale and Andrew Jacobs – Rocky Point Bird Observatory

Upon docking I was struck by the number of Pigeon Guillemots on the rocks . Although I haven’t checked back in our records, there certainly seems to have been an increase in numbers 

We were greeted by the new ecoguardian  Christine  Chourmouzis .  In addition to having a general survey of the reserve, I was able to direct Christine and James through the process of entering them as editors on racerocks.ca and creating a log and posting it on the Race Rocks website. 

Supplies for the Ecoguardian are off-loaded

 

 

 

 

 

 

Pigeon Guillemots also nest on the island

 

When I was teaching at Pearson College, we often monitored a set of tidepools out on the island’s West side. I checked out those pools again and took photos which show the state of algae growth. Some observations in the tidepool files provide a baseline for comparative studies in the future.  These files are on the tidepools

Today’s observations are in the set of photos below

I checked pool #4 which has a white quartz intrusion through it to see if the white periwinkle snails were still there. 

 

A review of some of the installations on the Island

 

Due to recent notices on social media about the problems that pet owners are having when their dogs get exposed to foxtail , I was concerned about whether there was a similar problem with marine mammals. This guy certainly seems to be enjoying the location however. 

I tried to find the small patch of the rare plant  seaside  plant Romanzoffia on the rocks on the East side of the house.  Unfortunately the area was covered with knotweed now. We will have to check again in the winter. 

The Turkish marsh gladiolus is now in bloom. This is a good example of a garden escape, planted by lighthouse keepers probably as much as 80 years ago, they still come up every summer .

 

 

E-Bird June Race Rocks gull survey and Census

Posted on by

E-Bird Gull Survey https://ebird.org/checklist/S184107190

Subject: June Racerocks Gull Survey

Rocky Point Bird Observatory & Pearson College Race rocks Gull Survey June 2024
Survey conducted by Andrew Jacobs and Ann Nightingale
Thank you to Greg for getting us out there again on the boat and Christine with the assistance during the survey.
This survey was conducted to investigate the phenotypes of the glaucescens-occidentalis hybrid complex using the Great Race Rock as a nesting area. We looked for pairing preference of phenotypes, nest habitat preference and mapped the nests that had parents on them. We looked at the breakdown of the colony diversity into five phenotypic groups – pure type Glaucous-winged Gulls, Glaucous-winged trending hybrids or light morph Olympic Gulls, intermediate trending hybrids or intermediate morph Olympic Gulls, Western trending hybrids or dark morph Olympic Gulls, and pure type Western Gulls. The nesting of Western Gull on the island is of specific interest as there are adult Western Gulls near the island year round and we would like to see if Western Gull pairs are starting to breed in Canada or if they are forming mixed pairs.
The survey also counted other species of gull and age classes as well as other species using the rocks this time of year. The general nesting grounds on the main rock were used by the hybrid complex, Pigeon Guillemot, and Black Oystercatcher although no nests of the latter two were seen they were displaying as if nests were nearby.
Ebird link with photos and sound recordings.
The numbers of pure type Glaucous-winged Gull were up for the breeding season over our previous survey by about 6-7 times at 69 individuals with 64 adults and 5 immatures. The number of hybrid and intergrade type Olympic Gulls was 321 with 314 adults and 7 immatures. The breakdown of colour morphotypes in the Olympic Gulls was light morph (Glaucous-winged trending hybrids) 138 individuals with 133 adults and 5 immatures, intermediate morph (Intermediate trending hybrids) 166 individuals with 164 adults and 2 immatures, dark morph (Western trending hybrids) 17 individuals with 17 adults.
The island at this time contained 4 adult Western Gulls, two of which were on nests, one was in the grassy area on a rocky outcropping and one was on the outer rocky part of the island along the cliff. The two nesting Western Gulls did not have a partner present while we were on the island. Surprisingly one of the Western Gull nests appeared to have a rock placed in with its three eggs in the nest of roughly egg size.
Total glaucescens-occidentalis hybrid complex birds 394
Glaucous-winged Gull 69 (17.51%)
Olympic Gull 321 (81.47%)
-Light morph 138 (35.02%)
-Intermediate morph 166 (42.13%)
-Dark morph 17 (4.13%)
Western Gull 4 (1.01%)
Visible pairings 44
Glaucous-winged + Glaucous-winged 2 (4.54%)
Glaucous-winged + Light Olympic 6 (13.63%)
Glaucous-winged + Intermediate Olympic 3 (6.81%)
Light Olympic + Light Olympic 14 (31.81%)
Light Olympic + Intermediate Olympic 5 (11.36%)
Light Olympic + Dark Olympic 1 (2.27%)
Intermediate Olympic + Intermediate Olympic 11 (25.00%)
Intermediate Olympic + Dark Olympic 2 (4.54%)
Banded individuals included three Olympic Gulls one colour banded adult (cobalt blue over metal right leg and red over cobalt blue left leg), and one adult and one immature with metal bands.
Other Gull species in the survey area included California Gull with 3 immature individuals and Heermann’s Gull with 4 adults.
The other non larid species present
1 Canada Goose
3 Harlequin Duck
11 Black Oystercatcher
2 Killdeer
8 Rhinoceros Auklet
254 Pigeon Guillemot
3 Brandt’s Cormorant
23 Pelagic Cormorant
1 Bald Eagle
2 Barn Swallow
Pinniped abundance and usage of the area
2 Northern Elephant Seal – two immatures one small and one medium sized.
59 Harbour Seals
2 California Sealions
Map of nest locations.
Next time we will also log unidentified nests.
Any other questions or feedback is welcome.
Thank you,
Andrew Jacobs