Whooo''s Who?

With the advent of Fall leaf color, Thanksgiving pumpkins, and cold crisp weather, love is in the air here in Missouri—at least it is if you’re an owl!

If you happen to be outdoors in the evening or late at night you may hear an owl calling.  At this time of the year our feathered creatures of the night are busy claiming a territory, and soon will be advertising for a mate. 

In our last blog we posed a little owl quiz with links to some audio bites of owl calls to test your knowledge.  Here are the answers to our quiz, as well as a few facts about each of those fascinating creatures.

Each of the photos is of a resident of the World Bird Sanctuary and represents his or her species.

Owl photo collage: Gay Schroer

Photo #1 is Timber the Eastern Screech Owl (Megascops asio)

Photo #2 is Jake the Great Horned Owl (Bubo virginianus)

Photo #3 is Goblin the Common Barn Owl (Tyto alba)

Photo #4 is Xena the Eurasian Eagle Owl (Bubo bubo)

Photo #5 is Olaf the Saw-whet Owl (Aegolius acadicus)

Photo #6 is Buzz the Tawny Owl (Strix aluco)

Photo #7 is Jersey the Barred Owl  (Strix varia)

Photo #8 is Mia the Spectacled Owl  (Pulsatrix perspicillata)

Now for the answers to our quiz:

Jersey the Barred Owl (photo: Gay Schroer)

A.            This owl’s call seems to be concerned about your dinner.  Photo #7 – Jersey the Barred Owl.  This bird’s call is said to sound like “Who, who, who cooks for-you” “Who, who, who cooks for-you-all”.  Barred owls are one of the most common owls in the Eastern U.S.  This bird is often locally referred to as a “hoot” owl.

Goblin a Common Barn Owl (photo: Gay Schroer)

B.            No wimpy hooting for this bird—it communicates with a high-pitched hissing scream.  This would be #3.  Pictured is Goblin the Common Barn Owl.  Did you know that Barn Owls are found on every continent except Antarctica?  Barn Owls have been on the endangered list here in Missouri due to habitat loss.  For a number of years WBS has been at the forefront of an effort to release captive bred Barn Owls back into the wild to bolster declining populations.

Timber, an Eastern Screech Owl (photo: Gay Schroer)

C.            Don’t let this bird’s sweet trilling call fool you—it’s a fierce little predator.  This would be #1.  Pictured here is Timber the Eastern Screech Owl. Eastern Screech Owls are generally seen in two color phases—red and grey, although there are occasionally intermediate brown shades of these two colors.  Their call is a mellow muted trill—no hooting for this bird.

Olaf, a Saw-whet Owl (photo: Gay Schroer)

D.            This owl’s call is a monotonous “hoop-hoop-hoop”, but its volume belies its diminutive size!  #5 - The Northern Saw-whet Owl has a surprisingly loud call for such a small bird.  Pictured is Olaf, a World Bird Sanctuary resident bird. When prey is plentiful, a Saw-whet Owl will kill as many as 6 mice in rapid succession, without consuming any of them. The excess food is cached in safe places and, in winter, is thawed out later by "brooding" the frozen carcass. When food is plentiful, it is common for only the head of each prey item to be eaten.

Jake, a resident Great Horned Owl (photo: Gay Schroer)

E.            The male of this species calls with a low-pitched monotone “ho ho-ho hoo hoo”, and is answered with a higher pitched “girly” version of the same call.  This would be #2, the Great-horned Owl.  Pictured is Jake, a WBS resident owl.  A Great Horned Owl is powerful enough to take prey two to three times heavier than itself.  Longevity is up to 13 years in the wild and as much as 29 to 38 years in captivity.

Mia, our beautiful Spectacled Owl (photo: Gay Schroer)

F.            This owl’s vocalization sounds like a knocking or tapping, “Pup-pup-pup-pup-o” issued in a rising crescendo.  (Hint – This owl is not native to the U.S., but you may have heard it if you’ve been to the World Bird Sanctuary’s weathering area lately.)  #8 is Mia the Spectacled Owl, and she can usually be found in the weathering area behind the WBS’s Nature Center building.  This owl hales from Mexico, Central and South America, most frequently found in dense tropical rain forests.  Once fledged, at about 5-6 weeks, the chicks depend on the parents for up to a year.

Buzz, a Tawny Owl (photo: Gay Schroer)

G.            This owl was the inspiration for the owl in the Winnie the Pooh tales and is the most common owl in Europe—especially in England.  #6 – The Eurasian Tawny Owl will usually nest in tree holes or nest boxes in trees, and pair bonds last for life.  Even though these owls are small they will defend their nest aggressively, even attacking humans on occasion if they perceive them as a threat to the nest.

Xena, everyone's favorite Eurasian Eagle Owl (photo: Gay Schroer)

H.            This owl issues a long, booming “oo-hooh”, and may even bark and growl if it feels threatened.  This would be #4 – the Eurasian Eagle Owl.  Pictured is Xena, one of our most popular resident birds.  This largest owl species eats mainly voles and rats, but has been known to take prey as large as a Roe Deer fawn.  They nest on cliff ledges, crevices between rocks, and cave entrances, although they are not above using abandoned nests of large birds. 

To meet some of these fascinating creatures, join us for an OWL PROWL  For information on WBS Owl Prowls Click Here or call 636-225-4390, Ext. 101.

Submitted by Gay Schroer, World Bird Sanctuary Volunteer

Northern Saw-whet Owl Banding Friend Program

 Are you a Friend of World Bird Sanctuary? Do you love owls? Are you interested in learning about bird banding? If you said yes to these questions then we have an opportunity for you!

Last fall World Bird Sanctuary joined Project Owlnet.  Project Owlnet  is  an organization that works to monitor owl population trends by mist netting and by banding migrating owls, especially Northern Saw-whet Owls.  The results are compiled and used to determine when and where these migrant owls are moving. 

Aspen - WBS's resident Saw-whet Owl

For the first time in the history of our site World Bird Sanctuary trapped and banded Northern Saw-whet Owls in 2012.  In fact over the course of the owl banding program the team trapped, banded and released a total of seven Northern Saw-whet Owls.  Our team is going to be at it again this year and would like to invite World Bird Sanctuary Friends to join them and learn more about this important program.

 

To experience the trapping and banding of wild Northern Saw-whet owls you must be a Friend of WBS.  Not a Friend? It is easy to join us in our mission.  Just click on this link to join!  http://www.worldbirdsanctuary.org/index.php/

Details about the Northern Saw Whet Owl Friend program:

Friends must pre-register for this fun program by calling 636-225-4390 ext: 106.

Limited space is available on the following Thursdays:

October 24

October 31

November 7

November 14

November 21

Time: 5:30pm-7:30pm

Age: 10 and up

Due to space constraints this event is limited to one Friend and a guest of their choice.

Please feel free to bring your camera but be aware for the owls’ safety flash photography is not allowed.

Due to the nature of owl migration there is no guarantee that you will see a wild Northern Saw-whet Owl.

This program is weather dependent and may be cancelled due to inclement weather.  Every effort will be made to reschedule.

Dress for the weather and wear comfortable walking shoes. This program will be indoors as well as outdoors.

For the safety of the owls no flashlights please, World Bird Sanctuary representatives will provide any necessary lighting.

Project Owlnet Report - 2012

Last year (2012) the World Bird Sanctuary’s Bird Banding Team embarked on a new and exciting project!  Following is team leader Linda Tossing’s report on the outcome of this new venture.

“World Bird Sanctuary – Project Owlnet – 2012

Aspen - WBS's resident Saw-whet Owl

“After visiting a Northern Saw-whet Owl (NSWO) banding station in Omaha, Nebraska during the 2012 Inland Bird Banding Association’s conference in Omaha, NE, the World Bird Sanctuary’s Banding Team asked the following questions:

“1.    Are there NSWOs in St. Louis, MO, especially in the Meramec River Valley? 

“2.    When do they migrate through? 

“3.    Are there NSWOs that winter in the valley?

“So we set out to answer some of these questions!   First thing we did was to get some training!  Representatives from the WBS Banding Team went to visit Dana Ripper and Ethan Duke of the Missouri River Bird Observatory, Marshall, MO.  We spent two nights with Dana and Ethan learning where to place nets, what equipment we needed, the procedures to band the NSWOs and what records to keep.  In the process, we banded 6 NSWO’s.   We also learned how much the weather impacted the results, and the importance of the wind direction!

“So the team came back and started conducting research.  We joined Project Owlnet, which is an organization that works to monitor owl population trends by mist netting and by banding migrating owls, especially Northern Saw-whet Owls.  The results are compiled and used to determine when and where these migrant owls are moving. 

“Along with WBS, there are two other banding stations in Missouri which are participating in the Project Owlnet - Missouri State University – West Plains (MSU-WP) operates one in St. Joseph and the Missouri River Bird Observatory (MRBO) has one in Marshall.  With our participation, we have the western, mid-state and eastern parts of the state covered.

“Based on information from Project Owlnet, we developed our plan!   We determined what was needed for equipment and then started collecting items such as special nets, a caller that played the male Saw-whet’s call, banding pliers, black light and bands!  We used the funds from a recent Inland Bird Banding Association Grant to purchase some of the equipment.  Cabela’s generously donated the caller. Then we started writing our banding protocols for the project (which were finalized at the end of the project!).   

“A north-facing site on a ridge overlooking the Meramec River was selected.  This site had some understory critical for migrating owls.   We set up 5 nets with the caller that continuously broadcasted the male Saw-whet call.

“The schedule was set to start November 12 and run nets 5 nights a week until December 9.  We would have 23 days of banding sessions in the required 30 day period.  “We started our sessions ½ hour after sunset and kept the nets open for 4 hours. Our first night of banding was Monday, November 12 and our first check of the nets at 6:13 PM brought us our first owl!  We were very pleased that we ended the night with 2 owls – we couldn’t believe our good luck!

“So, we answered our first question! – Are there Saw-whets in St. Louis, MO, in the Meramec River Valley?   During our banding sessions, we captured owls on November 12, 13 and the 25 - a total of 7 new birds and 1 that we had previously captured (otherwise known as a recapture in banding lingo).  We learned that weather did indeed drive our results.  We had birds on nights with northern winds and colder temperatures. 

“After November 25, we had no more owls.  Given the MRBO and MWSU’s results, we feel we missed the early part of the migration (the answer to our second question).  We can suppose the terrain and understory of our banding site is not appropriate for wintering grounds (our third question).  Northern Saw-whet Owls prefer coniferous trees for winter cover.     However, more research is needed for conclusions. For 2013 we are adjusting our schedule and will start earlier!  We look forward to this year’s results!”