Northern Flickers are common enough year round here on the east coast of Vancouver Island, that it is easy to forget that they are actually migratory in much of this province, as well as Alaska and the Yukon. If one pays attention though, migratory waves of this species do occur, especially in Autumn, as the snow begins to fall in the far north.
In Moorecroft Regional Park, Northern Flickers do nest, but in low numbers. As far as I have been able to determine, there are only two breeding pairs occupying the 34 hectares within the park boundaries. Thus, except for the period right after fledging, or during a migratory wave, one rarely encounters more than a couple of Northern Flickers on a walk in the park.
On the morning of September 9, 2014 I was doing my morning walk around the park, and stopped in at Skipsey Pond to see if any migrants had flown in overnight. Checking the thickets of red-osier dogwood around the pond, I found a few Yellow-rumped Warblers, Black-throated gray Warblers, Warbling Vireos, and my first Ruby-crowned Kinglets of the fall. I also heard a lot of woodpecker activity in the snags that surround the pond. It took no time at all to spot a few of each of the five common woodpecker species here. And everywhere I looked, there were Northern Flickers. In the end I counted 17 of them around the small pond. A very impressive number for such a small area. Several hours later when I had finished my park rounds, the number had grown to 54 Northern Flickers, the highest count I have ever had in this park.
Returning home for breakfast and switching on the radio, reports of snow across the Yukon, northern BC, and even as far south as Calgary, made me wonder; Was it simply the time to head south, or were the large number of migrants all of a sudden triggered by the first snows of the season? Only the Flicker knows.
There are large numbers of California Gulls passing NW over Moorecroft right now. Probably due to the unsettled weather, they are passing quite low over the park and they are vocalizing continually, which is typical when these birds migrate at lower elevations in the dark. It will be interesting to see if this movement continues after sunrise.
Some years, we see massive numbers of California Gulls moving into the Salish Sea at this time of year, searching for the herring spawns which help fatten the birds for their long migration to the prairies.
For some time now, I have suspected that the numbers of Turkey Vultures migrating through Metchosin and East Sooke Park each Autumn are probably greater than the total breeding population on Vancouver Island. So where are these other Turkey Vultures coming from? We know that some of them are coming from the southern and northern Gulf Islands, and a few migrate across Johnstone Strait onto Northern Vancouver Island. But what about the large breeding population on the Sunshine Coast? Is it is possible that these birds somehow make their way across the Salish Sea onto Vancouver Island somehow? The distance across much of the Salish Sea is even greater than that across Jaun de Fuca Strait, and would seem to be a barrier to any of the migratory raptors that do travel well across water. Some recent observations from Moorecroft Regional Park in Nanoose, has made me wonder if perhaps the Salish Sea isn't the barrier it was previously believed to be.
On September 27th, 2011, we were doing some sea-watching from Vesper Point, in Moorecroft Regional Park. At app. 12:40, a kettle of 14 Turkey Vultures were spotted, fairly high, and north of Gerald Island. These birds were flapping hard, and seemed to be loosing altitude fairly quickly. When they reached Gerald Island, they began soaring again, and quickly gained some altitude, before soaring ashore over First Bay in Moorecroft, and then continuing on towards Nanoose Hill. About 15 minutes later, another kettle of 17 Turkey Vultures appeared app. two kilometres to the northwest, very high up and soaring towards Gerald Island. They also began catching thermals as soon as they reached Gerald Island, and it didn't take them long to reach the Moorecroft shoreline. Interestingly, this kettle also contained a Cooper's Hawk and an American Kestrel. Although I had little time today to perform active monitoring, I did notice three Turkey Vultures soaring ashore from the direction of Gerald Island.
So where are these birds coming from? The total breeding population on Gerald Island this year appeared to be one pair, and the adults and young left the island back in late August and spent several weeks in Moorecroft before going elsewhere. I would imagine that the total breeding population of the two Ballenas Islands is similar, and it is possible that they made their way onto Vancouver Island previously anyway. I can only think of two explanations. These birds are flying directly across from the Sunshine Coast (app. 28 kms) or from Lasqueti Island (app. 10 kms). I would think that direct crossing from the Sunshine Coast is unlikely. It is simply too far. Lasqueti Island is certainly within the range of a migrating Turkey Vulture though. And there are certainly more than 30 pairs of Turkey Vultures nesting on Lasqueti. How do I know this? Because for years I have counted them as they migrated from Lasqueti across to Parksville, usually coming ashore near the Englishman River Estuary, a distance of about 17 kms. The problem is, I see Turkey Vultures migrating across there every year. Why would they suddenly begin migrating in the other direction?
I am beginning to wonder if the Turkey Vultures we have seen over the past two days are not actually from the Sunshine Coast, and are using Texada Island as a migratory Stepping Stone. Looking at a map, it becomes obvious that if Turkey Vultures do migrate between the Sunshine Coast and Vancouver Island, this is likley the route that thyey take. Using Google Earth, I made the following calculations;
Smuggler Cove (north of Sechelt) to Thormanby Island = 1.5 kms
Thormanby Island to Texada Island = 3.5 kms
Texada Island to West Ballenas Island = 12 kms
West Ballenas to Gerald Island = 3 kms
Gerald Island to Moorecroft Regional Park = 1 km
All of this seems entirely possible for a migrating Turkey Vulture to accomplish. Now, with only about a week left in the migratory period, I need to do a lot more monitoring to see if this is indeed the case. Exactly the type of mystery that fascinates me.
I did a complete census of Moorecroft Regional Park this morning. I won't bore anyone with the data though. It was like a graveyard in the forest. Except for striking numbers of Red-breasted Nuthatches, there were virtually no birds at all. It did get a bit more interesting when I got to Vesper Point though. There was a really heavy migration of loons taking place. And although we have been seeing one or two Common Loons here for the past few weeks, today there were Pacific and Red-throated Loons as well. In two hours this morning I counted the following birds moving past Vesper Point;
Pacific Loon: 112
Common loon: 38
Red-throated Loon: 2
For many years I have been hoping to do some migration monitoring on local hills in the area between Nanaimo and Qualicum Beach. Unfortunately, I am usually away in the NE corner of BC at this time of year doing this type of research for wind energy project proposals. This year, with the economy in the toilet and the Canadian Conservative Party fascists dismantling the environmental assessment process, I find myself unemployed, and thus able to do a bit more hawk watching locally. Today, Donna and I hiked to the top of Nanoose Hill on what is known as the "Notch Trail". It is a quick slog to the top through Douglas Fir, Garry Oak and Arbutus forests, which are broken by rock outcrops near the top, offering great views to all directions but the east. We spent five hours here, starting at 9:00 and ending at 14:00. It was hot and sunny, with only a slight breeze from the north. Migration was slow, but we were thrilled to have as many as 23 Turkey Vultures above us at one point, soaring so close that we could hear them croaking at each other.
Birds recorded from Nanoose Hill Today:
Turkey Vulture: 66
Osprey: 1
Red-tailed Hawk: 2
Merlin: 1
Peregrine Falcon: 1
Glaucous-winged Gull: 3
California Gull: 3
Band-tailed Pigeon: 81
Vaux's Swift: 4
Anna's Hummingbird: 3
Hairy Woodpecker: 1
Northern Flicker: 10
Hammond's Flycatcher: 2
Hutton's Vireo: 3
Steller's Jay: 2
Common Raven: 12
Horned Lark: 1
Violet-green Swallow: 5
Chestnut-backed Chickadee: 14
Red-breasted Nuthatch: 27
Brown Creeper: 4
Bewick's Wren: 1
Winter Wren: 3
Golden-crowned Kinglet: 22
Ruby-crowned Kinglet: 5
Hermit Thrush: 1
American Robin: 69
Varied Thrush: 15
American Pipit: 24
Yellow-rumped Warbler: 35
Dark-eyed Junco: 21
Brewer's Blackbird: 2
Purple Finch: 3
Red Crossbill: 28
Pine Siskin: 550
American Goldfinch: 4
Evening Grosbeak: 2
