As we have officially reached the mid way point of our season here at TLBO I will take this opportunity to give a quick summary of the season to date. On the whole August has been well below average. 681 birds banded in our standard nets is our second lowest total of the nine years TLBO has been operating.
Perhaps our most obvious decline this year has been in Northern Waterthrush. To date we have banded just 18, compared to our average of 49. MacGillivray’s Warbler is also well below average with just 18 banded as well (average 36). Amongst our earliest migrants we are unlikely to catch more than a couple more of each of these species this season.
It’s not all doom and gloom though, there are a few species that seem to have had a successful breeding season and are on course for an above average season and they are included in the table below.
Species | Banded Aug. 2014 | Average/Full Season |
Swainson’s Thrush | 96 | 113 |
Common Yellowthroat | 80 | 125 |
“Traill’s” Flycatcher | 41 | 28 |
Savannah Sparrow | 11 | 18 |
Lincoln’s Sparrows also appear to have bounced back somewhat from a record low season last year. In 2013 we banded 2/3 of our Lincoln’s Sparrows in September. If that holds true this year they should return to close to average numbers (204/season).
From a diversity standpoint the season thus far has been bang on average with 109 species detected within the census area. Notable species so far include Long-billed Curlew, Turkey Vulture, Clay-colored Sparrow and Prairie Falcon, all of which were new for the station list. A few other species of interest that we don’t record every year include Bonaparte’s Gull (2 detections) and Horned Lark (35 seen on Aug. 29).
Below is a list of all the birds we have banded this season to date, including those caught in our non-standard nets.
Species | Band | Recap |
Warbling Vireo | 140 | 7 |
Swainson’s Thrush | 98 | 34 |
Common Yellowthroat | 83 | 22 |
Yellow Warbler | 59 | 12 |
Lincoln’s Sparrow | 56 | 16 |
American Redstart | 48 | 11 |
Song Sparrow | 43 | 27 |
Wilson’s Warbler | 35 | 0 |
MacGillivray’s Warbler | 18 | 4 |
Northern Waterthrush | 18 | 3 |
Willow Flycatcher | 16 | 0 |
Alder Flycatcher | 16 | 0 |
Cedar Waxwing | 15 | 0 |
Savannah Sparrow | 14 | 0 |
Black-capped Chickadee | 11 | 12 |
Traill’s Flycatcher | 11 | 4 |
Orange-crowned Warbler | 10 | 0 |
Red-eyed Vireo | 8 | 9 |
Least Flycatcher | 6 | 0 |
Yellow-rumped Warbler | 6 | 0 |
Oregon Junco | 6 | 0 |
Dusky Flycatcher | 5 | 0 |
Lazuli Bunting | 4 | 0 |
Red-winged Blackbird | 4 | 0 |
Sharp-shinned Hawk | 3 | 0 |
Hairy Woodpecker | 3 | 0 |
Hammond’s Flycatcher | 3 | 0 |
Ruby-crowned Kinglet | 3 | 0 |
American Robin | 3 | 0 |
Purple Finch | 3 | 0 |
White-crowned Sparrow | 2 | 1 |
Downy Woodpecker | 2 | 0 |
Western Tanager | 2 | 0 |
Vesper Sparrow | 1 | 1 |
Western Wood-pewee | 1 | 0 |
Pacific-slope Flycatcher | 1 | 0 |
American Crow | 1 | 0 |
Mountain Chickadee | 1 | 0 |
Brown Creeper | 1 | 0 |
Hermit Thrush | 1 | 0 |
Chipping Sparrow | 1 | 0 |
White-throated Sparrow | 1 | 0 |
Pine Siskin | 1 | 0 |
This morning was most notable for our first frost of the season. This may have contributed to the lack of birds as we banded just 9 new birds despite a nearly full compliment of net hours. Census was good with 35 species including our first Violet-green Swallows of the season. Eight Northern Shovelers were on the lagoon. Andrew (NCC) and Gail Harcombe are back for another season as our Conservation Volunteers for week 5. Hopefully bird activity improves for them for the rest of the week!
—
Species | Band | Recap |
Lincoln’s Sparrow | 2 | |
Swainson’s Thrush | 1 | 2 |
Song Sparrow | 1 | 1 |
Warbling Vireo | 1 | |
Ruby-crowned Kinglet | 1 | |
Orange-crowned Warbler | 1 | |
Common Yellowthroat | 1 | |
Savannah Sparrow | 1 |
—
Birds banded | 9 |
Species banded | 8 |
Birds recaptured | 3 |
Species recaptured | 2 |
Species on census | 36 |
Species Total | 46 |
STANDARD TOTAL BANDED | 681 |
SEASON TOTAL BANDED | 764 |