The Mystery of the Owl

Back in May (the 21st-25th of 2012), I was involved with FLCC's Conservation Field Camp, a 3 level field course taught throughout the week. Long days, nights camping out, but tons of fun. I was a student at Field Camp in 2011, but this past course I was hired as a technician for the week to work with the wildlife professors John Van Niel and Clinton Krager.

For past entries, please check out my previous entry: Field Camp 2012, as well as John's entries: Field Camp.

A couple weeks before the class ran, the 4 of us:

Photo credit: Melissa Miller

Team Wildlife: Mady (the other technician and my roommate!), Clinton, John, and myself.

... went out to Camp Cutler, a property of the Boy Scouts, to set up some equipment that would be ready to use at the start of Field Camp.

John and I had a bunch of camera traps to deploy: Cuddeback Attacks/Captures and both flash and IR. I don't remember how many we had, but I want to focus on one particular camera/location, which happens to an IR Cuddeback Capture.

John wanted to set this type of camera in this particular spot for a reason: flying squirrels. It was set on tree, about 5 feet off the ground, that was aimed at a crooked tree. John had great success with this location before, during the previous year's course. And we wanted to use an IR camera so that the flash wouldn't spook any nocturnal visitors to the crooked tree.

We got our flying squirrel (sp.), so it was a good placement!

Anyway, the REAL excitement is the picture we got of a certain nocturnal bird species. It's an owl, definitely an owl, but the specific species is under discussion at the moment. Here it is:

As we're scrolling through pictures on John's laptop, with students standing behind us watching, we get to this guy or gal. And John (a bird-nerd-camera-fanatic) and myself (someone who's aspiring to be that too) looked at eachother in disbelief. To be honest, I didn't know what I was looking at at first, but I KNEW it was something special...and possibly not an Owl I was familiar with. John was super excited, because he HAD an idea of what it could be...and the students were picking up on our excitement too...it was a really cool moment for all of us.

The species that were coming to mind: Eastern Screech Owl (Megascops asio) and Barn Owl (Tyto alba). The EASO is common in Western NY/Finger Lakes region. The BNOW is not common. In fact, it's listed as rare.

I've referred to the NY Breeding Bird Atlas for information...

As you can see...the Barn Owl is few and far between, even more so in the last set of data collecting years from 2000-2005.

And the Eastern Screech Owl is MUCH more prolific.

So, the odds of seeing an EASO is much greater than a BNOW.

Well, this summer while I was in Alaska (did you all know I went there???), I kept thinking about this Owl thing. During Field Camp, all of the Bird Nerds that were there all took at look at the photo, all agreed it looked VERY much like a BNOW, but how could it be? BNOWs haven't been seen or reported in the area in a really loooong time.

While in Alaska, I took an eBird workshop. eBird is really freaking cool, and if you're into wildlife and especially birds, you need to create an account and get eBirding. It's like a social network JUST for Bird Nerds! Plus, it's a really great way for everyone (from the layperson to researchers) to collaborate data and see what the birds are up to.

Basically you input sightings and observations. Each region has a moderator, so that if some astronomical number of birds, or a strange species gets reported, they can contact the observer and figure out what the sighting was all about.

So, guess what I did? I reported a 'rare' species in Naples, NY.

A day later, I got an email from the moderator, who I shall keep anonymous. He wanted to know every piece of information about the sighting, as well as wanted to see the pictures that I had. It was so exciting! I felt like I was really contributing to the bird world, and this expert in the field was asking ME for my thoughts. I sent the below pictures to the moderator. One is the"The Owl" and then the second picture is an American Crow taken in the same spot (yet during the day, hence the presence of color).

 

 

Thankfully, I had a couple of bird enthusiasts in my corner to help with me the verbage and vernaculum. I was with John when this picture was captured, so of course he was the main source of information. He has instilled in me this skeptical and critical way of thinking. I try not to take anything at face value, but ask why, why, why, why, why...until it probably gets tiresome. ((sorry everyone))

I also have Dr. Losito, my new advisor here at SUNY Cobleskill AND the resident ornithologist. I'd call him a Bird Nerd, but I don't know him that well yet...! I sent Dr. Losito the pictures as well, and as I expected- he got fired up. I mean, in the grand scope of the world's goings on, this Owl thing is null. But, in our backyard here in NY, this is big news for birders.

I'm going to share comments that I received from my professors, and from the moderator. All anonymously and leave it at that.

"Not a Barn Owl. Too much streaking below, legs look too thick/short/heavily feathered, proportions look wrong. Much smaller than the crow - an overexposed Screech Owl. The facial disc doesn’t curve around at the top like a Barn Owl-more like the shape of Screech up towards the folded back ear tufts. The dark on the edge of the “cheek” portion of the disc is exactly right for Screech too."

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I measured the tarsus length of each of the three species in involved in this scenario from study skins in the college collection and came up with the following:

BAOW = 80mm (hence the nick name long-legged owl)

AMCR = 65mm

EASO = 40mm

Ratio of EASO:AMCR = 0.615

Ratio of BAOW:AMCR = 1.23

Here is a rough measurement of the tarsus length of the birds in the photographs:

Owl = 19mm

AMCR = 29mm

Ratio of Owl:AMCR = 0.655

Therefore the final ruling is that it has to be an EASO based upon these morphological limits.

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I think EASO is correct relative to the BAOW question. The EASO is only 8.5 inches and the BAOW is 16 inches. The American Crow is 17.5. So in looking at the relative size of the birds the owl in the picture is relatively small - more toward 8.5 or 9 inches as opposed to the larger BAOW and Crow. In looking at the squirrel it looks large relative to the tree to the tree is probably around 9-10 inches across. Again the Owl in the picture is small relative to these two metrics. So based on size alone it looks like an EASO.

 

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So, birders: what do we think?

 

Field Camp 2012

Hey folks! I'm back from the world of a non-working power cord and a dead battery :) Also, my life has finally stabilized for a few months.

Last week I participated in FLCC's week-long course called Conservation Field Camp. This is a class that all students going through the Natural Resources Conservation, Conservation Law, and I think Fisheries Technology programs must participate it. I was a student in it last summer, and this spring I applied to be a student technician this time around. I was hired to be a "wildlife tech" under conservation professor John Van Niel (wildlife expert), and biology professor (cell bio expert) Clinton Krager. My friend/future roommate, Mady, was also a wildlife tech.

The four of us were in charge of exposing students to camera trapping, small mammal trapping, bat mist-netting, track identification, using track boards, and GPS/telemetry.

There is SO much I could write about, and I have a ton of pictures...but I don't have the time to write about it all. We caught flying squirrels, red squirrels, chipmunks, deer mice, and jumping mice in the traps, and I have some awesome pics of critters in the hand. And I hope that John at Backyard Beasts posts some of the camera trap pics we caught. Some AMAZING first "traps" for me personally, but he has all the pictures :)

What I'M going to write about is the bat mist-netting. This was a first time experience for me personally, so I was super excited to see what we caught. Because bats are nocturnal, we couldn't set the nets 'til about 8:30-9pm. The students were technically done with class at 9:30, and the days were long...so by the time bats came out, many were ready to head to bed.

So, on Monday night: John and I set the nets while Clinton gave a brief lecture on what bats live in our area, some natural history, winter adaptations, and some information on bat-related diseases.

Before I continue, I must add that John and Clinton both received intensive training in mist-netting and handling bats. It's not something that anyone can just do for fun. They also both received the full round of rabies vaccinations as a precaution, and then on top of that, they wear leather gloves covered by vinyl gloves that get swapped out between each bat.

Ok, so the net was set...and we walked away from it for 15 minutes. Checked it: nothing. Waited 15 minutes, checked it: nothing...and onwards for about 45 minutes. Student numbers were dwindling, all four of us were losing patience and interest...and so we called it a night, bat-less.

Tuesday night, we has a new group of students, and so Clinton went through his schpeel again, while John and I set nets up. I think Mady was napping... :)

We waited a few sets of 15 minutes...and then:

A BAT!

I'm unsure of species...the 4 of us meant to look at the pics I took and try to ID this little guy, but that didn't happen. The guesses were a big brown bat (Eptesicus fuscus) based on Clinton and John's previous experience handling bats. This little guy was pretty vicious, which you could expect from any wild animal, but some have more attitude than others.

Student Melissa Miller and John checking out which side of the net the bat is on. Sometimes it's hard to tell because they get themselves so tangled!

Check out the dentition on this guy! In our Intro to Fish and Wildlife class that John teaches us to ID skulls from black bear through the canids, rodents, lagomorphs, and the bats, amongst many others. The chiropteras have this gap in their jaw, which you can see here between their canines. It's cool to finally see in "live" after studying just skulls for so long.

John assisting Clinton remove the bat from the net. Sometimes, as bird banders can attest, you just can't get the bird/bat out of the net. As any hands-on studying requires some amount of stress, we the researchers should have the animals welfar first in mind. Clinton probably could have gotten that bat out eventually, but not without loads of stress on this little guy. So John took a small pocket knife and carefully snipped the constricting lines.

FREEDOM! I love this picture :)

They're surprisingly furry!

I kind of wanted to touch it, but I couldn't because I'm not vaccinated for rabies.

The rest of the week yielded no bats. For those of us who were there Tuesday night, we got to witness a very cool thing. Even though bats are a common critter in NY, we don't often get to see them up close. We didn't have a high success rate of captures, but I hope that John and Clinton know that it was totally worth the time and effort to set those nets every night.

PS: I'm in ALASKA! I will be writing an entry soon on my first day here before I started work!