Saturday, March 21, 2015

The Owl's' Silent Flight

     There's much mystique surrounding owls and one of them is their unique ability to sneak up on their prey while in flight.  When other birds fly, their flapping wings create turbulence (air gushing over the surface of the wings) which emits a noise, thereby, giving warning of their coming. Owls, on the other hand, have a special wing design and other body characteristics that gives them the ability to fly in complete silence. 

     For starters, the owl's broad wings helps it glide in the air without having to flap too often. When they do need to flap, their unique wing design reduces the noise made by turbulence.  They are able to do that, in part, by their primary feathers which are serrated, or comb-like, that breaks down the turbulence into smaller air currents. These primary serrated feathers are called 'fimbriae' or 'flutings'.  The edge of these feathers are also softer, allowing more air to pass through which further reduce the noise. There is some speculation that these soft feathers may also shift the sound energy to a frequency beyond the hearing of prey and humans. Furthermore, the down-like feathers on the owl's legs serves as noise reduction.

     
These intriguing characteristics of the owl's silent flight have captured the attention of scientists who are now working on developing a quieter aircraft.


                                                               Learn more in this video:



   Then enjoy owls in fight with these unique designed gift products:






Owl in flight tee shirts
Owl in flight tee shirts by Peninink
Check out other Owl T-Shirts at zazzle.com

Brown Owls in Flight Shirt
Brown Owls in Flight Shirt by Memory_Lane
Find more Animal T-Shirts at Zazzle


WHITE OWL IN FLIGHT CARD
WHITE OWL IN FLIGHT CARD by Yongsin05
View other White Cards at Zazzle.com






Tuesday, March 3, 2015

Irish Owls

St. Patrick's Day is just around the corner and this is a good time to talk about owls. No, owls are not green and they won't lead you to a pot of gold, but they can lead you to the country - Ireland.
           
There are three owl species that call Ireland their home, so we'll call them the Irish owls.

The most common species is the Long Eared Owl. The name derives from its long ear tufts on top of it's head. They raise these tufts when on alert, and lower them when relaxed. They have spotted brown and black feathers and their eyes are bright orange. They live near open grasslands in woodlands and hunt small animals. They use abandoned crow and other birds nests and lay between 3 to 5 eggs anywhere from late March to the end of August. 

The Long Eared Owl is not currently considered as threatened, however, there are concerns that this may happen in the near future with the continual loss of habitats, use of pesticides, and  other environmental factors.


USA, Colorado. Portrait of long-eared owl Posters
USA, Colorado. Portrait of long-eared owl Posters by danitadelimont


Another well known owl species in Ireland is the Barn Owl. This species is the most threatened of the Irish owls. However, due to recent aggressive conservation efforts, these bird's numbers are on the rise (See posting 'Owls in the News' here).  

The Barn Owl inhabits mostly farmland and low lying areas. They are well known for nesting in old barns and other man made structures, and, therefore, are closer to proximity with humans. As such, these birds are very willing to nest in boxes made especially for them. 

The Barn Owl have light or tan plumage with a white underbelly. They have no ear tufts and have a round head with a heart shaped face.  These birds have longer legs then other owl species. 

One special characteristic of the Barn Owl is that it mates for life. The female lay 4 to 7 eggs between
April and May. They hunt not only small mammals, but other birds and even insects. 





Then there is the Short-Eared Owl. This owl species is not as common as the Long-Eared Owl.  It is more widely seen in winter where they can be sighted in grasslands, marshes, and dunes. In the summer, they prefer to frequent the heather moorlands. The Short-Eared Owl resembles much like its cousin, the Long-Eared Owl, except for the smaller ear tufts.

The Short-Eared Owl breed mainly in Ireland's Sileve Bloom mountain area and nest on the ground. Unlike the other two Irish owls, this bird hunts mostly during the day. Their prey are the usual mice, small mammals, as well as the occasional birds and insects.





And since St. Patrick's Day is near, here are some fun owl themed St. Patrick's Day products:


St. Patrick's Owl Card
St. Patrick's Owl Card by i_17bingo
Shop for more greeting cards online at Zazzle.

St. Patrick's Day Owl Party Plate
St. Patrick's Day Owl Party Plate by cutencomfy
Browse St patricks day Plates online at Zazzle.com

St. Patrick’s Day Owl Tee Shirt
St. Patrick’s Day Owl Tee Shirt by Punk_Your_Party
View other St patricks day T-Shirts at Zazzle.com