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Archive for the ‘Breeding Birds’ Category

As with the night before, the south winds were blowing fairly strong when Joachim and I arrived at the TLBO for owl banding. However, with Sabina Harris and a trio of local kids coming out we didn’t want to disappoint so we proceeded to open nets though with low expectations. Fortunately, we were able to catch an owl on the first net round, much to the collective delight of all present. Even better was catching two more on our third net check! This meant that each of them got to release one owl after Joachim and I had banded them. After our visitors left we caught a further three, all on closing net round. All of the owls were hatch-years and this lack of adults meant that we still have not deployed any of our Motus tracking tags but we were still pleased to have a caught a season high count of owls, and in sub-optimal conditions as well.

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Golden-crowned Kinglet

This morning Joachim and Sonya took off early for a day trip to Bella Coola. Sachi opened up nets on his own and before I arrived he had a high flying group of Snow Geese, 17 in all. This is quite a scarce bird here with this being just the second record at the TLBO, after a single flock of 30 that were seen Sept. 26, 2013. The nets were busy right from the off and when I arrived there were a half dozen birds awaiting me in the banding lab while Sachi was out checking the nets, gathering more. Every second bird seemed to be a Ruby-crowned Kinglet and indeed they would top the day’s banding charts with 36 banded, more than half of the total of 63 banded for the day. A couple Golden-crowned Kinglets were mixed in, their little bandit-masked faces providing a different kind of cute compared to the innocent, wide-eyed look of their ruby adorned cousins.

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Sachi did well to get a record shot of the distant Snow Goose flock!

While I was off on census, Sachi heard our first Rusty Blackbird of the season, calling as it passed overhead along the Homathko River. We have been expecting our first rusty for a couple weeks now so it was a bit of a relief to finally add it to the seasons species list. He also banded our 4th Pacific Wren of the season which ties us with our single season high from 2018.

Census, like the banding, was dominated by Ruby-crowned Kinglets with a smattering chattering from the bushes throughout and a veritable crusade of them pushing through the young aspen halfway through the census route. An integrade (hybrid) Northern Flicker, with evident field marks of both the Red-shafted and Yellow-shafted subspecies was obliging as it alighted in a nearby snag though it was still a little far away for decent photos. The jumbled, musical refrains of a Townsend’s Solitaire was pleasing on the ear as I waded through the kinglets.

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The census route is full of fall colours at present

Peak activity in the nets seemed to hit around the time I was arriving back from census. After a brief detour to track down a calling American Three-toed Woodpecker I made my way back tot banding lab to start banding a flurry of birds Sachi was taking out of Nets 1 and 14. Fortunately, Jim Sims from nearby Eagle Lake arrived at this time and was able to help out by scribing while I, and then Sachi, banded this flurry of birds. Once things ere under control again, and a few nets were closed due to the increasing south wind, Jim and I headed down to do a hawkwatch. The remainder of the morning was fairly uneventful for Sachi, with the nets mostly catching falling leaves.

Our eBird list for the day can be found HERE.

Hawkwatch #8

There was a pretty brisk south wind when Jim and I arrived at the hawkwatch site and the mostly overcast skies were not ideal. However, as it was quite warm and there appeared to be more blue in the approaching skies we maintained high hopes. Two Mountain Goats were visible upon our arrival and a little group of Juncos passed through the bushes in front of us. However, scan as we might, there was not a raptor to be seen. After an hour the ridgeline seemed to be getting more sun and we did finally spot a Golden Eagle, presumably the same resident we have seen on most visits. As we approached the 1.5hr mark in our hawkwatch we decided to call it quits though we would tally one migrant raptor, a Sharp-shinned hawk that briefly circled in front of the peaks before dropping down into the trees. On the drive back home we spotted two more Mountain Goats on the slopes north of our site, the first time we’ve seen them here. For a complete list of what we saw see our HAWKWATCH ebird list.

Species Band Recap
Ruby-crowned Kinglet 36  
Song Sparrow 13 1
Yellow-rumped Warbler 5 1
Lincoln’s Sparrow 4 2
Golden-crowned Kinglet 2  
Pacific Wren 1  
Fox Sparrow 1  
White-crowned Sparrow 1  
Black-capped Chickadee   1
Swainson’s Thrush   1
Savannah Sparrow   1

Daily   Season  
Birds Banded 63 Total Banded 1674
Species Banded 8 Standard Banded 1662
Birds Recapped 7 Species Banded 57
Species Recapped 6 Total Recapped 247
Species on Census 26 Species Recapped 17
Species Recorded 50 Species Recorded 140

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We had another opportunity to go out owling last night with just a light to moderate south wind allowing us to open nets. While the conditions weren’t ideal it didn’t stop us from catching two Northern Saw-whet Owls. The first was with local visitors Sandy and Sandy with a couple friends, Dave and Lucille, in tow. We were hoping to catch an adult as we recently received our Motus vhf tracking tags that we are planning on putting on 10 Saw-whet Owls over the next week or so. Our preference is for adults rather than hatch-years due to the high natural mortality rates in the latter. Alas, hopefully tonight we can deploy our first Motus tags; stay tuned! As we were heading out to close the nets we were surprised and delighted to spot a Northern Flying Squirrel in the young aspens behind the banding lab. This was a first for both myself and volunteer Joachim! A fine way to finish the night.

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Northern Flying Squirrel photo by Joachim Bertrands

This morning Sachi opened nets solo while the rest of us slept in after owl banding. He had a quiet start but we arrived just as he was wrapping up the second net check on which he collected 10 birds including our first three Ruby-crowned Kinglets (of eight) and four Yellow-rumped Warblers (of a season high 17) of the day. We noticed there were more of the “Myrtle” subspecies of Yellow-rumpeds around today and this was reflected in our catch with four banded. Shortly after this we also caught a late MacGillivray’s Warbler, almost certainly our last of the season.

Sachi had a pleasant census with the usual crowd around, including lots of Ruby-crowned Kinglets. The Evening Grosbeaks that were so prevalent in August have slowed down to just the odd individual so he was pleased to encounter a little group of three flying over as he neared the road, just north of the lake.

At shortly before 10:00 the Tatla Lake School group arrived for their annual visit. Many of the kids are veterans of the TLBO having visited several years in a row now. Their astute observations, questions and sharing of personal bird-related experiences were a delight for us, as they are every year. They brought us good luck this season, as they have in the past. The first net round after they arrived a flock of mostly Yellow-rumped Warblers had found their way into Net 14 and with the catch from the rest of the nets we were kept busy banding for the next little while which meant we had plenty of birds, of a good variety, to show off. Our TLBO Committee Chair, Peter Shaughnessy stopped in to take some photos of the visit. Several of these are here in this blog post so thank you Peter!

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The school group ended up staying right through until our net closing, alternating between watching us band the birds, and participating in their planned group activities. Among the birds they got to see were a late Yellow Warbler, our 4th White-throated Sparrow of the season and a very spiffy adult Golden-crowned Sparrow. Along with these were the more commonly caught Savannah Sparrows (6) and a season high of eight banded Lincoln’s Sparrows.

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Near the end of the session I was able to sneak away for 10 minutes to try to catch an American Kestrel on our Bal-chatri trap. Low and behold, after placing the trap under the tree where two kestrels were sitting, the male came down and got caught! Unsurprisingly, this was a huge hit with the kids as they admired its beautiful colours and size compared to the petite-by-comparison songbirds we had been banding.

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A male American Kestrels showing off its beautiful plumage

Our final act of the morning was to attempt to catch a quartet of Mountain Bluebirds that came to forage out in the field near our “Pipit fence” nets. Alas, the wind had started to pick up by this point so the nets were blowing about a bit and were too visible to catch them. Perhaps as an indication of the futility of our attempts one perched atop the net pole briefly.

For a full list of the birds we tallied today check out our eBird list HERE.

Species Band Recap
Yellow-rumped Warbler 17  
Lincoln’s Sparrow 8 1
Ruby-crowned Kinglet 8  
Savannah Sparrow 6  
Song Sparrow 5 2
Downy Woodpecker 1  
American Kestrel 1  
Black-capped Chickadee 1  
Hermit Thrush 1  
MacGillivray’s Warbler 1  
Common Yellowthroat 1  
Yellow Warbler 1  
Oregon Junco 1  
White-crowned Sparrow 1  
Golden-crowned Sparrow 1  
White-throated Sparrow 1  

Daily   Season  
Birds Banded 55 Total Banded 1611
Species Banded 16 Standard Banded 1599
Birds Recapped 3 Species Banded 56
Species Recapped 2 Total Recapped 240
Species on Census 34 Species Recapped 16
Species Recorded 48 Species Recorded 138

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Aug 30

Well as announced I went into Williams Lake for groceries yesterday.  After six hours of driving and over an hour to find the recycling place I got back late, which resulted in a long nap this afternoon.  So here is today’s blog quite late in the day.  We find ourselves about half way through the season today as well so I will have to throw some stats at you.

Although it never really felt busy today, we actually set a new season record for most birds banded at 44 (up from 40 which we have had twice this season).  This despite Avery allowing two birds to free themselves before he could get to them on his last net run, one of which would have been our first White-throated Sparrow of the year.  Busy days are always best when the flow of birds is constant and that was certainly what we had today as no one net run was that big, and when we set a new record I was surprised because it had felt like a slow day.  This helps us avoid stress on the birds and on ourselves as the last thing we want is an avoidable injury.  Perhaps it also felt slow, because there were few birds to be seen, emphasized by a very mediocre census that finished in record time because there was nothing to look at.  Low detection of birds was no doubt caused by the light rain we had most of the day, and resulting in only a short period of time that the station did not have two banders.

The banding highlight of the day was definitely our first Olive-sided Flycatcher of the year (and just the sixth ever), though we were also surprised to catch three Hammond’s Flycatchers after having caught very few empidonax flycatchers in the last week.  The only species of note on census was a Western Wood-pewee that was actually calling near the lagoon.  Apparently today was a good day for flycatchers.

My what a nice cardigan you are wearing

Well if you’re still reading don’t say I didn’t warn you about impending stats.

As you can see we have recently surpassed 2006 totals and our slope has become parallel to more 'normal' years

As you can see we have recently surpassed 2006 totals and our slope has become parallel to more 'normal' years

Something to keep in mind is that in the last five years we have averaged 1779 total birds banded, this year we are running a projected total of just 1359.  This is good news though as just two weeks ago our projected total was less than 1000.

To see which species are causing this trend I provide you this table.

Average 2011
WAVI 97.2 37
SWTH 94.0 67
COYE 74.6 31
YEWA 60.2 85
SOSP 54.8 46
LISP 54.6 42
AMRE 48.4 80
WIWA 48.0 34
NOWA 44.4 48
OCWA 42.8 22
MGWA 33.4 19

Not nearly as bad as the last time I presented this information, but you can definitely see that Common Yellowthroats, Warbling Vireos, and Orange-crowned Warblers are down, while Yellow Warblers and American Redstarts are up.

If you were curious as to the numbers of each species we have caught this year then worry not!  For here are the answers, so long as you speak bird code.

Species Banded Recaps
YEWA 85 9
AMRE 80 17
SWTH 67 9
NOWA 48 9
SOSP 46 30
LISP 42 9
WAVI 37 0
WIWA 34 1
COYE 31 3
OCWA 22 3
MGWA 19 0
CEDW 14 5
BCCH 12 2
TRFL 11 2
DEJU 11 0
WIFL 10 1
ALFL 9 3
REVI 7 2
DUFL 7 1
HAFL 7 0
GCKI 5 0
VESP 5 0
RCKI 4 1
SAVS 3 0
LEFL 3 0
LAZB 3 0
WCSP 3 0
TOWA 2 0
PSFL 2 0
RBNU 2 0
PISI 2 0
CHSP 1 0
BHCO 1 0
FOSP 1 0
HAWO 1 0
WETA 1 0
WEWP 1 0
AMRO 1 0
BLPW 1 0
AUWA 1 0
PUFI 1 0
SSHA 1 0
OSFL 1 0

As you can see Yellow Warblers, American Redstarts, and Swainson’s Thrushes are leading the charge, but of late Warbling Vireos and Lincoln’s Sparrows are making a race of it.  A race they will likely ultimately win.

Now if you were wondering how our twelve nets were performing (as I know you all are), wonder no more.

Net Banded Birds/Hr Recaps % time used
17 156 0.97 16 0.96
18 87 0.97 8 0.54
6 68 0.50 15 0.81
16 70 0.43 15 0.96
10 57 0.35 7 0.96
15 41 0.25 11 0.96
12 39 0.24 4 0.96
9 35 0.22 6 0.96
1 31 0.19 7 0.96
13 24 0.15 12 0.96
14 19 0.12 5 0.91
11 17 0.11 4 0.96
MX 1 0.02 1 0.32

Avery’s net 18 has now been passed by perennial favourite net 17 for the lead, while those two combined almost outperform the other ten nets.

But now you’re no doubt wondering who is doing all the work at the station.  Well here are the stats on that.

Bander Banded Percent Recaps Processed
CMC 291 45.12 57 46.03
ALB 285 44.19 31 41.80
MBL 41 6.36 11 6.88
MT 27 4.19 12 5.16
RJS 1 0.16 0 0.13

At the moment I have done a couple birds more than Avery, but if there were a plot over time you would see me take a quick lead on him at the start of the season and then see him creep up slowly until he passed me this morning while I was on census.  At this point he graciously let me band most of the birds after my return in order to save face.  Though he did ‘accidentally’ erase about 30 records a couple days ago after a large net run.  This meant I spent the next ~15 minutes recovering the lost data while he banded about 12 birds in a row.

There I think that will be all the stats I throw at you for now.  Stay tuned for the end of the next month when I throw even more at you.

~Chris

Warbling Vireo 6 Total banded 44
Common Yellowthroat 6 Species banded 15
Wilson’s Warbler 5 Total recaptured 3
Lincoln’s Sparrow 5 Species Recaptured 3
American Redstart 4 1 Census:       # Species 17
Orange-crowned Warbler 3 1 Daily total:  # Species 39
Hammond’s Flycatcher 3
Yellow Warbler 3
Swainson’s Thrush 2
White-crowned Sparrow 2
Olive-sided Flycatcher 1
Dusky Flycatcher 1
Ruby-crowned Kinglet 1
Song Sparrow 1
Oregon Junco 1
Black-capped Chickadee 1

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wilson's phalarope nest (Peter Shaughnessy)

A Wilson's Phalarope nest. (Photo by Peter Shaughnessy)

We recently completed our annual June walk through the fields and forests in our properties in the Tatlayoko Valley. We do this each year to record birds either seen or heard along the way.

In particular we track breeding bird populations, as this is a key way we can judge how well our conservation properties are protecting local biodiversity.

Two of the many fascinating birds we encountered are Wilson’s Phalarope and Lazuli Bunting. You can read more about them on NCC’s website.

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