Time for a Trim

Each time I brought Carson the Red-tailed Hawk outside last week, I had to cringe a little. Her beak was overgrown and not only did it look bad, it was also getting in her way. It was so long that a piece of meat occasionally got speared by the hook and she had trouble getting it off. It was time for a trim.

Her last trim, or coping, was 10 months ago when she visited The Raptor Center last fall. While Aldo the American Kestrel’s beak grows so fast he needs a trim every 2 months, Carson’s beak grows slowly and requires less maintenance.

Coping a hawk beak feels like a piece of cake compared to a kestrel. Kestrels, as falcons, have specialized notches in their beaks that need to be shaped. Hawks conveniently have a smooth-shaped beak and I only had to concentrate on shortening the hook. We finished quickly and brought her back to her mew to enjoy half of a rat with her smooth, shortened beak.

Carson beak.jpg

Language of Falconry

Aldo equipment.JPG
Aldo’s equipment is literally “under my thumb.”

Some words used in falconry, like mew or jess, are very specific to raptors. Other terms have been adapted for use in our everyday lives. Considering falconry’s history going back thousands of years, it is not surprising to see these terms work their way into our language. These are just a few examples of common phrases rooted in falconry:

  • A bird that has eaten too much is “fed up” and lacks the motivation to hunt or work for the falconer, just like a person that is fed up and unwilling to cooperate.
  • Before and after a hunt, a falconer holds the bird’s equipment with his thumb to prevent the bird from flying away. The term “under your thumb” has expanded to mean anyone under your control.
  • Some falconry birds are trapped from the wild as adults. Called “haggard” birds, they are often caught during migration when they might be thin and disheveled from their flight, like a haggard human that looks a little rough around the edges.

 

 

Spring Cleaning

IMG_5152.JPG

In spring, I love to find wildflowers blooming, to wait for migrating birds to return, and (perhaps most of all) to connect the outdoor hose. Winter makes a frozen mess in the raptor mews that we try to clean with buckets of hot water, but we can’t get everything. The birds don’t seem to mind since they spend their time on perches, elevated above the muck. But it was clear to us they required a heavy spring cleaning. We spent a full morning this week rinsing, washing, scrubbing, raking, and disinfecting every surface of the mews. With the help of above-freezing temperatures and a little elbow grease, the mews are practically sparkling!

Sticks

IMG_5058.JPG
Carson holding on to one of her sticks.

Even through the ice and snow last week, birds can sense that it’s spring. There seem to be more osprey than we’ve seen in recent years in the Cable area and they are busy nesting. Over the course of two or three days I watched one pair’s nest-building progress on my daily commute. What started as a few tree branches dangling precariously from a utility pole quickly became a sturdy mass of sticks. It is similar in structure to bald eagle and red-tailed hawk nests. In red-tailed hawks, the male and female work together to collect sticks and weave them together into a nest lined with strips of bark, fresh plants, or dried vegetation.

Our red-tailed hawk, Carson, has also sensed the springtime urge to build. Noticing an uptick in her activity this spring, I decided to test her interest in nest building. I placed 5 sticks around her mew one night and wondered if she would touch them. I was surprised to see each stick had moved the next morning. Since then, she moves the sticks around nearly every day, and occasionally she gathers them on top of her platform as if waiting for more sticks to appear so she can make a decent-sized nest.

Bath time

Carson in water bath2.jpg

Last Saturday was finally warm enough for the birds to take a bath outside. When I gave Carson a pan of water, she hopped in as soon as I left the mew. I watched from the door for a moment, but she just looked back at me. I went back to my office to give her some privacy. An hour later I returned to check on her, expecting to see a dripping hawk after splashing and playing in the water. Instead I found Carson still standing in her water, completely dry except for her feet.

I continued to check on her throughout the morning and nothing changed. She simply stood in the water pan for three hours straight. I guess she decided that all she needed was a nice foot soak!

Enrichment

Carson phone book enrichment.jpg

To maintain healthy birds in captivity, we encourage natural behaviors to keep their minds and bodies active. Most of a wild raptor’s day is spent simply sitting on a perch and watching their surroundings. That is easy to replicate in the mews: our birds sit and watch the Museum’s backyard daily.

For the rest of their time, we place new objects in the mew for them to look at or toys to play with. Carson recently received a phone book that Jayme (Living Collections Assistant) carefully folded like a fan. After a few weeks, Carson had ripped up nearly half of the book! Shredding is a natural behavior that wild raptors do when they catch a large meal, like a rabbit. This kind of enrichment keeps Carson busy and gives her an opportunity to rip and tear something for fun.

Weights

Aldo weight chart.jpg

Animals are amazing actors with the ability to mask injuries and illness. They want to hide any weakness from potential predators or competitors, while still finding their basic needs to survive. Raptors will keep hunting for food even with extreme injuries. When our Great Horned Owl, Theo, was rescued, he appeared to be well fed. The rehabilitators believed he was actually running down mice despite having a broken wing. Since their behaviors rarely show signs of illness, their weight is often the first sign of a problem. We take daily or weekly weights to track our birds’ health. The key is knowing what is normal for each bird.

I chart each bird’s weight to keep an eye on patterns. Aldo’s chart, for example, shows daily fluctuations and seasonal changes. His weight last summer hovered around 108 grams (3.8 oz) and increased in November. The higher weight gives him a little extra buffer against cold temperatures through the winter. As spring approaches, he has begun shedding weight in preparation for breeding season and warmer weather. With a baseline of these normal weight patterns, I can identify abnormalities and keep him at healthy weight.