Wednesday, May 8, 2019

Spring, a time for eggs hidden in planters

Spring, a time of year symbolized by eggs.  Birds of all sorts busily build nests, lay eggs and incubate as soon as they can to maximize the growth of their family before they migrate.

Canada Geese stake out nesting sites during this time, and their fearless demeanor make them fairly comfortable nesting in manmade structures such as planters or parking lot islands.





At our office, a goose selected a planter outside one of our windows as a safe place to create a nest and lay eggs.  It is definitely safe, since it's on the fourth floor.  But...well, it's on the the fourth floor.  We consulted Wildlife Rescue, who told us that geese do survive four storey drops, but it would in fact be the glass barrier that would prevent them from getting to ground level.  They recommended we wait until the eggs hatch, (28 days after being laid) at which time they'd send someone to move the family.

So now, we knew that we'd have a closeup view of the goose for close to a month.  The nest was right outside one of our windows, and our IT team set up a webcam to enable viewing by our staff.

The goose laid her first egg March 27, but she'd disappear for a day before coming back and laying another.  While she was away, she'd obscure the eggs with debris, but the next morning, we'd observe another egg laid.  She repeated this until she laid her fifth egg, on April 3, at which time she started incubating. We thought this would be it, but we counted a sixth egg soonafter.  Many birds will lay their eggs one at a time, and only start incubating once the last has been laid to increase chances the chicks will hatch at roughly the same time.

On May 1, exactly 28 days after incubation began, all six eggs hatched.



Wildlife Rescue came by the same afternoon, and relocated the family to Deer Lake in Burnaby.

During the last month, we saw the gander only a handful of times, and in the final couple of weeks, we didn't see him at all.  We did see a lone goose sitting in the grass at ground level, but we couldn't tell whether he was the gander for this mother, or for some other family (there were at least a couple other goose families around in our building complex).  Wildlife Rescue doubted he was it, as they should be communicating a lot more frequently.

Wildlife Rescue said that this is a very busy time for geese. Downtown Vancouver is especially busy, since there are few roofs there that provide safe ways for goslings to get to ground level.

Since we had ample footage, I put together a video with all the action. There's a 2 minute and 10 minute version, depending on how much of a goose fan you are.  The 10 minute version has a lot more footage of the rescue operation.
2 min:

10 min:

Sunday, January 13, 2019

Carnivores in Richmond

Carnivores are interesting, and it's not just because I am one.  They need to use a combination of physical strength, mental acuity, speed, and all round evolutionary ingenuity to overcome another animal, just to survive.  Commonly, they risk their own safety just to eat, and have to overcome some amount of fear that the victim could fight back, causing an injury that could eventually lead to death by not being able to hunt.

Humans are understandably cautious around other carnivores.  They threaten our own safety, or the safety of our pets and livestock. In cities such as Vancouver, large carnivores get pushed out to the boundaries where forest meets subdivision. In Richmond, coyotes might come to mind as one of our largest carnivores, hanging out on the ocean side of the dyke in the tidal marsh.  What if I told you that coyotes weren't the largest?  "Humans, of course," you'd grin.  "No, even bigger."  "In present day?" "Yes, in present day".

Until a whale or dolphin swims into Richmond (which I'm sure has happened, just not in recent memory), I submit to you, the sea lion.


This one in Steveston was a California sea lion, I suspect, as they have longer snouts than the larger stellar sea lions. The males tip the scales at almost 800 pounds (the steller sea lions are gargantuan, at over 2000 pounds), making them much larger than a typical 250 pound black bear on the North Shore. Yet despite this size and sharp teeth, we somehow disassociate them from being predators.  Lacking feet, we think of them as awkward on land.  With most of their sleek body hidden underwater, we don't realize how large these animals actually are, and their capability to inflict harm. Years of seeing them perform tricks alongside humans have acclimatized us into thinking that they want nothing more than to hear applause for their comedic timing. And if I said the word "seal", the cartoon image in your head would surely include a multicoloured beach ball.  We think of them as tame, resulting in unfortunate encounters like this, which happened not far from where I took the above photo.

To be fair, attacks on humans on land are rare.  But given their size and speed, this largest carnivore that frequents our city boundaries demands a healthy respect.

Thursday, December 6, 2018

There are humans in this photo



A photo of the International Space Station. Yesterday, it made in appearance above Vancouver for about 4 minutes, peaking almost directly overhead. Looking at it through a 300mm lens, it zooms from one end of my field of view to the other in about five seconds.  It occupies about 40 of the 97 pixels in width of my original photo.

Until someone lands on the moon, this will be the furthest a human being will ever be in one of my photos. At about 400 km away and 109 metres wide, taking this photo is like taking a photo of a football field in Portland, Oregon (if the earth's curvature weren't in the way).  Oh, and it's travelling through space at 27,000km/h, so it'd span the distance from Portland to here in about the time it took you to read this far (just under a minute).

There are a few reasons why manmade satellites like the ISS aren't always visible.  The shadow of the earth gets in the way except much of the time. But also, many satellites aren't easily visible to the naked eye unless their solar panels are oriented in just the right way to reflect sunlight.  And of course in Vancouver, clear skies are often a challenge.

You'll have a chance to see it tomorrow (the 7th) night for about 6 minutes as well.
https://spotthestation.nasa.gov/sightings/view.cfm?country=Canada&region=British_Columbia&city=Vancouver#.XAn-z2hKiUk

We have a Canadian on board at the moment, Quebec-born David Saint-Jacques. Bonjour, monsieur.

Sunday, November 25, 2018

The beaver moon

Terra Nova park has long been home to beavers.  The stumps of young sapling bordering the pond have been chiseled to an irregular point, providing the first evidence.  On one side of the pond is a lodge, obscured by cattails from most vantage points for privacy.  A 3 metre tree is now growing out of the lodge, suggesting that the beavers have been around quite a few years.

Lodge during the day
I've never seen the beavers during the day, and I was suspicious whether they were still around, as I hadn't noticed any fresh stumps around the pond (plus there was a tree growing out of the lodge...wouldn't the beavers at an active lodge be a bit more fastidious with their landscaping?).

So I wasn't realistically thinking I'd spot any beavers on Friday night, when I visited the park. It so happened that Thursday night marked the first full moon in November, known as the beaver moon because beavers are busily constructing their lodges in preparation for winter.  Surely, having completed their Beaver Moon work, they'd be sharing a few beers with their buddies down by the lodge, not sauntering about in the cool barely-above-freezing temperatures.

While it was indeed a fullish moon, clouds shrouded direct moonlight. Despite that, the clouds illuminated by a moon from above and the urban lights from below provided enough background to show silhouettes of silent owls drifting past.  It was when my eyes were skyward that I was startled by a splashing in the water, as loud as a large rock being thrown in.

 
Beaver splash, a big "plunk"
Beaver creating tracks in the floating Azollapalloza

One of it's nearer approaches

The beaver swam around in circles, splashing periodically to alert his family of this unwelcome guest.  He eyed me for probably 5 minutes before he tired of me and disappeared.


The view at night

Thought the sound behind me in the dark was a person, relieved to see this little guy

The beavers have been expanding their range over the last few years. The stumps by the pond were brown, suggesting they were years old, but as I trekked along the dyke, following the occasional sounds of splashing in the ditch next to the dyke, I came across some fresh stumps.
A diameter of about a 30 cm

This tree and about three others in the vicinity were about 5 meters away from the ditch, and seemed a lot fresher (see the woodchips on top of the fallen leaves).  The top of the tree had already been gnawed off, probably taken for the edible leaves.  Some of the trees near the ditch were partially damaged, but were now protected with chicken wire.  Looks like the parks maintenance people will have to move further inland.