What’s Washed In – October 17, 2014

Hi COASSTers,

Hope that all of you are enjoying the beautiful fall weather! It’s been a great month at COASST, and we’re looking forward to seeing many of you over the next 2 weeks with trainings in Alaska, Washington, and Oregon.

Have you had any rainy surveys lately? If so, now is a great time to check on your kit supplies. Let us know if you need more “rite in the rain” datasheets, additional cable ties, chalk, etc.  We’re happy to help!

We’ve had some great photos come in to the COASST office recently.

Let’s take a look at What’s Washed In:

 

 

 

 

 

 

 

 

 

 

 

 

 

Bill: 42 mm, Wing: 29 cm, Tarsus: 58 mm

Ken and Cathy found this bird on September 14 at Horsefall South in Oregon.

Here we have a black bill with tube (some of us know where to go already), but let’s use the wing as a guide.

Alaska wing key (page 44): choose dark (go to Q2), choose simply dark (go to Q5). Underwing linings are white (go to Q6), wing chord is option two – 24-40cm (go to Q7).  With this wing chord and some gray feathers on the leading edge, dark primaries and secondaries, we’re left with two choices:
1) Sooty Shearwater-SOSH (TN7)
2) Short-tailed Shearwater-STSH (TN5)
Bill length is the clincher for telling these two species apart – Sooty Shearwater!

West coast wing key (page 33): choose dark (go to Q2), choose simply dark (go to Q3), choose uninterrupted area of bright white (go to Q4), wing chord 24-40cm (go to Q5), white centrally on the underwing, bordered by gray, so we’re left with:
1) Sooty Shearwater-SOSH (TN5)
2) Short-tailed Shearwater-STSH (TN7)
Bill is diagnostic – must be a Sooty Shearwater.

West coast wing table (page 32): Select “large” row and “dark upperwing” column, specifically “dark upperwing with white linings.” Two species to choose from:
1) Sooty Shearwater (TN5)
2) Pacific Loon (LO2)
All the measurements fit for a Sooty Shearwater, but let’s look at the PALO profile. Oops – tarsus doesn’t fit and bill is not hooked – Sooty Shearwater it is!

 

 

 

 

 

 

 

 

Bill: 64 mm, Wing: 41.5 cm,Tarsus: 83mm

This bird was found at Cape Lisburne in Alaska on July 31 by Alaska Maritime National Wildlife Refuge Staff (just returning from an eventful field season).

This species is only included in the Alaska wing key (page 44): choose “white-to-nearly-white” mantle. Yes! Only three choices: Ivory Gull (nope – wing chord too small), Glaucous Gull Immature (yep!), Swans (nope – wing chord too big). GLGU – congrats!

Cape Lisburne is the northernmost part of the Alaska Maritime National Wildlife Refuge. Check out this video of the remote islands monitored by refuge staff.

 

 

 

 

 

 

 

 

 

 

Tarsus: 38.5 mm (bill and wing not measurable)

This bird was found by University of Washington Marine Biology students at South Ocean on October 12.

Start with the foot key (Alaska: p34, West Coast p22): webbed (go to Q2), completely webbed (go to Q3), 3 webbed toes (go to Q4), foot way less than 50mm – Alcid. We’re a little stuck on the family page since we don’t have a wing, but at least our first list includes:
West Coast: Common Murre (AL2), Pigeon Guillemot (AL10) – and we can eliminate a slough of other Alcids with dark bills since their tarsus measurement is way short.
Alaska: Common Murre (AL3), Thick-billed Murre (AL5), Pigeon Guillemot (AL7), Black Guillemot (AL7). Same here  – we can eliminate a bunch of the small Alcids with dark bills – tarsus measurement too short.
Upperwing (middle of photo) and foot (lower left) are all dark – Common Murre.

Importantly, this bird is entangled (marked as “L” for line on the datasheet), a relatively rare occurrence (1/200 birds, or 0.5%). This marks the 35th entangled bird since the start of 2014 (or 1.4% of new birds in 2014), a number elevated by a single survey at Slip Point (WA) where Janet found 20 birds (mostly Sooty Shearwaters) washed up in a net.

 

 

 

 

 

 

 

 

 

 

During his marine debris survey at Old Mill Park in Washington on October 12, Lee found this silica gel pack. It has a couple of great examples of symbols that can be recognized internationally as potentially hazardous to human health. COASST is keeping track of such information to better understand the amount and type of hazardous materials among debris objects.

 

 

 

 

 

 

 

 

 

 

Gene and Keith found this abalone at Shipwreck Point South in California on September 25.

Abalones move relatively short distances over their lives and attach themselves to rocks, waiting for kelp and other algae to drift by. Using their large foot, abalone anchor themselves and also grab onto food. Once they have a piece of algae, they can then use their radula, a tongue like organ lined with small rows of teeth, to break it down into smaller pieces.

Here the holdfast of the bull kelp is attached to the shell of the abalone. It’s hard to say who is winning!

Seen something on the beach you’ve always wondered about? Send us a photo!

Cheers,
Erika, Julia, Jane, Hillary, Charlie, Heidi, Jenn, and the COASST Interns

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