Sunday, February 21, 2016

2016 Great Backyard Bird Count Summary

I cut some corners in comparison to last year. This year, I didn't take an aggressive approach to dividing checklists. To fine tune data for the eBird community, I recorded checklists roughly by habitat within Chambers Creek Properties last year. This year, I decided to go with my normal routine of submitting a single checklist for each walk, regardless of how lengthy they become. I also didn't remove distances from back and forth walks. For example, the canyon includes the length of the canyon out and the same approximate length (allowing for minor variations) back. According to eBird, you really should only count the distance one way for that kind of segment.


The change in distance measurements has other consequences. Distances will look larger this year than comparable walks last year. Also, total bird counts should be lower. For those who don't know how to count birds, you are supposed to provide conservative counts for the total number of birds in the area. Last year, if I had Red-breasted Mergansers on the Puget Sound and Chambers Creek, I could count them for one checklist then recount them for another. Since they would be on the same checklist this year, I have to keep the high count because I have no way of knowing if the birds on the different bodies of water are different. They could have easily moved around while I was on the east side of the park.

With the two changes that went against eBird, I added one more in line with what they want. I included birds identified by voice this year. For each checklist, I made sure to include "Heard" in the comments when I failed to actually see a bird. Usually, I don't bother with species that were heard, although birds seen and identified only by voice usually works for me. The Steller's Jay is the only species I recorded that I never actually saw during the bird count. Others I reported as heard were seen elsewhere.

For a quick summary, I walked 49.31 miles in 23 hours 35 minutes (these numbers don't count walks between parks). This is in comparison to 61.57 miles (actual walking rather than the reduced amount I reported - see above) in 31 hours 35 minutes. This year, I recorded 64 species and a total count of 4146 birds. Last year, I had 76 species and 8182 birds. I have broken down the sightings by day and by locations below.


Day/LocationChecklistsTimeDistanceSpeciesCount
2/12/201635:2511.5138963
2/13/201635:5211.28481354
2/14/201656:0112.9949892
2/15/201636:1713.5342937
Sequalitchew Creek Trail11:323.35821
Fort Steilacoom Park21:524.1319590
Chambers Creek Properties311:1325.20411509
Farrell's Marsh Wildlife Area32:555.321657
Saltar's Point10:160.43535
Sunnyside Beach Park10:180.64622
Steilacoom Parks Total53:296.3922114
Point Defiance Park11:283.1014277
Titlow Park10:401.2015312
Tacoma Parks Total12:084.323589
Pierce County Totals1320:1443.37552823
Nisqually National Wildlife Refuge13:215.94431323
Grand Totals1423:3549.31644146

For a breakdown of individual checklists, links have been provided below:

DayLocationLink
2/12/2016Chambers Creek - Grandview/Soundview Loophttp://ebird.org/ebird/view/checklist?subID=S27458454
2/12/2016Point Defiance waterfront walkhttp://ebird.org/ebird/view/checklist?subID=S27458517
2/12/2016Titlow Lagoonhttp://ebird.org/ebird/view/checklist?subID=S27458571
2/13/2016Nisqually NWRhttp://ebird.org/ebird/view/checklist?subID=S27496188
2/13/2016Sequalitchew Creek Traihttp://ebird.org/ebird/view/checklist?subID=S27496283
2/13/2016Steilacoom--Farrell Marsh Parkhttp://ebird.org/ebird/view/checklist?subID=S27496409
2/14/2016Chambers Creek - Grandview/Soundview Loophttp://ebird.org/ebird/view/checklist?subID=S27547014
2/14/2016Sunnyside Beach Parkhttp://ebird.org/ebird/view/checklist?subID=S27547112
2/14/2016Saltar's Pointhttp://ebird.org/ebird/view/checklist?subID=S27547191
2/14/2016Steilacoom--Farrell Marsh Parkhttp://ebird.org/ebird/view/checklist?subID=S27547240
2/14/2016Fort Steilacoom Parkhttp://ebird.org/ebird/view/checklist?subID=S27547312
2/15/2016Chambers Creek - Grandview/Soundview Loophttp://ebird.org/ebird/view/checklist?subID=S27601797
2/15/2016Fort Steilacoom Parkhttp://ebird.org/ebird/view/checklist?subID=S27601869
2/15/2016Steilacoom--Farrell Marsh Parkhttp://ebird.org/ebird/view/checklist?subID=S27601912

Alternatively, I have created a spreadsheet that can be found at: https://onedrive.live.com/redir?resid=2E6EFB80915ED5BD!10122&authkey=!AIL3OT8STfVHttQ&ithint=file%2cxlsx

I also decided to play around with an image (that Google appears to have lowered the resolution). A taxonomic portrayal of all the species I recorded can be found broken down by order (15), family (28), genus (47), and species (64) below (common names when available):
Asterisks indicate that an entry doesn't count as a species. Three of these are birds without a specific species identified (you could argue that I actually saw 67 species). The other is a hybrid.

UPDATE: Pictures have been uploaded to an album in Flickr. I have also added the pictures to a post at my photo blog.

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