Barn Owls

Location: Texas

Camera Host: Anonymous

Find more about Weather in Italy, TX

May 19, 2016

Chick #5 Passed Away

Unfortunately, around 10:41 AM today chick #5 also passed away. We couldn't get a complete view on the cam, but it looked like Dottie ate the young owlet. This behavior is not unusual and we have seen it happen on this cam in previous years.  

May 19, 2016

Siblicide - Youngest Owlet Eaten by Older Owlet

Sadly a siblicide event occurred shortly after midnight this morning. An older owlet consumed the youngest owlet. Aggression between nestlings is well-documented behavior. Unfortunately the death of a nestling in the wild is not unusual. When food is scarce, aggression may result from competition for food, especially in broods of four or more. It is common for owlets like these to hatch within days of each other and typically the eldest are most dominant. The youngest was very small in comparison to its siblings, and relentless thunderstorms in the area have made it difficult for Dottie & Dash to hunt for food in the past few weeks. As in real life nature shows us beautiful and profound moments, as well as moments that seem tragic or difficult to comprehend at times. At the Cornell Lab of Ornithology, we look to nature as our teacher. We hope that you, like us, will choose to watch, question, and learn from what we see. The Bird Cams are intended to interfere with nature as little as possible. If we were to remove the smaller weaker birds we may disturb the other owlets and the owlets may not survive naturally.  

May 13, 2016

Agressive Interactions Between Dottie and Dash

Dottie responds aggressively to Dash entering the nestbox without additional food. These interactions are part of the way that she will continue to try and motivate Dash to increase the prey he has been delivering for the owlets.  More...

May 13, 2016

Agressive Interactions Between Dottie and Dash

Dottie responds aggressively to Dash entering the nestbox without additional food. These interactions are part of the way that she will continue to try and motivate Dash to increase the prey he has been delivering for the owlets.  More...

April 29, 2016

Dottie and Fly

Check out this adorable clip of Dottie chasing a fly around the nest box. 

April 28, 2016

Wood Ducks Return

A pair of Wood Ducks continues to hang out around the nest box, but Dottie's doing a great job of holding down the fort and chasing off the intruders. 

May 19

Chick #5 Passed Away

Unfortunately, around 10:41 AM today chick #5 also passed away. We couldn't get a complete view on the cam, but it looked like Dottie ate the young owlet. This behavior is not unusual and we have seen it happen on this cam in previous years.  

May 19

Siblicide - Youngest Owlet Eaten by Older Owlet

Sadly a siblicide event occurred shortly after midnight this morning. An older owlet consumed the youngest owlet. Aggression between nestlings is well-documented behavior. Unfortunately the death of a nestling in the wild is not unusual. When food is scarce, aggression may result from competition for food, especially in broods of four or more. It is common for owlets like these to hatch within days of each other and typically the eldest are most dominant. The youngest was very small in comparison to its siblings, and relentless thunderstorms in the area have made it difficult for Dottie & Dash to hunt for food in the past few weeks. As in real life nature shows us beautiful and profound moments, as well as moments that seem tragic or difficult to comprehend at times. At the Cornell Lab of Ornithology, we look to nature as our teacher. We hope that you, like us, will choose to watch, question, and learn from what we see. The Bird Cams are intended to interfere with nature as little as possible. If we were to remove the smaller weaker birds we may disturb the other owlets and the owlets may not survive naturally.  

May 04

Last Barn Owl Egg Hatches

Early this morning the last owlet hatched out of the egg in the Texas Barn Owls nest. More...

Barn Owl

Building

Nest Placement

Barn Owls put their nests in holes in trees, cliff ledges and crevices, caves, burrows in river banks, and in many kinds of human structures, including barn lofts, church steeples, houses, nest boxes, haystacks, and even drive-in movie screens.

Nest Description

The female makes a simple nest of her own regurgitated pellets, shredded with her feet and arranged into a cup. Unlike most birds, owls may use their nest sites for roosting throughout the year. Nest sites are often reused from year to year, often by different owls.

Clutch Size

2-18 eggs

Incubation Period

29-34 days

Nestling Period

50-55 days

Egg Description

Dull white, often dirtied by the nest.

Condition at Hatching

Helpless, covered in white down.

Mammals

Food

Barn Owls eat mostly small mammals, particularly rats, mice, voles, lemmings, and other rodents; also shrews, bats, and rabbits. Most of the prey they eat are active at night, so squirrels and chipmunks are relatively safe from Barn Owls. They occasionally eat birds such as starlings, blackbirds, and meadowlarks. Nesting Barn Owls sometimes store dozens of prey items at the nest site while they are incubating to feed the young once they hatch.

Typical Voice

Barn Owls don’t hoot the way most owls do; instead, they make a long, harsh scream that lasts about 2 seconds. It’s made mostly by the male, who often calls repeatedly from the air. Females give the call infrequently. A softer, more wavering version of this is termed a purring call. Males use it to invite a female to inspect a nest site, and females use it to beg for food from the male. Barn Owls also make a loud, 3-4 second hiss at intruders or predators that disturb the nest.more sounds

See full Species Info at All About Birds

About the Nest

TexasBarnOwl BoxThis Barn Owl box is nestled in the rafters of a large open-air pavilion on a ranch in Texas. Surrounded by grasslands and scrubby forest, the box has been occupied off-and-on by Barn Owls for as long as the landowner can recall. The Cornell Lab previously featured this nest site online from 2005-11, during which time resident owls had 11 nesting attempts, 7 of which successfully fledged at least one nestling. The camera system was updated in 2013, and a pair of owls arrived at the box during the last week of February 2014.

In addition to the Barn Owls, other birds of the open grasslands can be heard vocalizing in the background, including Eastern Phoebes, Tufted Titmice, Eastern Bluebirds, and Western Meadowlarks.

About the Barn Owls

Little is known about the two Barn Owls who have taken up residence in this owl box. In 2013 a pair successfully fledged four young owls from this site and those same adults may have returned again in 2014. During the day the owls rest and preen, leaving to forage as night approaches. Listen for their eerie, raspy vocalizations throughout the day and keep track of their comings and goings throughout the night thanks to the infrared illuminator in the box (don’t worry—the light is invisible to the owls.)

Barn Owls are more sexually dimorphic than other owl species. The female is larger than the male, with a heavily spotted chest and more color on her head and body; in contrast, the male appears very white and pale. She creates the simple nest cup of shredded regurgitated pellets in which she’ll lay an average of 2-18 eggs and the male brings meals of small mammals for her and the nestlings. The female incubates the eggs as soon as they are laid, leading to “hatching asynchrony,” a situation where there are big differences in size between the nestlings based upon the hatch date of each. In years of scarcity, the smallest perish and are sometimes even consumed by their nest mates. Though nest failures such as this are difficult to watch, this strategy enables the parents to produce as many young as conditions allow.

Learn more about Barn Owls in our AllAboutBirds Species Guide.

Acknowledgments

Thanks to the landowners, who wish to remain anonymous, for allowing us access to this nest and to the property manager for helping to maintain the camera during the season.