The owl man of Colorado College presses on
Brian Linkhart slipped the body of the small, female owl out of a sock. It was the first flammulated owl he had ever touched, and it was quite clearly dead.
The owl, a small bird that lives among the ponderosa forests west of Colorado Springs, fit into the palm of his hand. A mostly mysterious species first caught in Colorado nearly a century before, the female owl was Linkhart’s maiden voyage – the first “flam” that he and his professor, Richard Reynolds, would use to launch the first and really only study of the red-hued owls.
But the 20-something Linkhart was convinced that he had killed her. Her eyelids were shut. Her talons were open and hung loosely from her body. Linkhart shook her – no action.
As the men juggled the owl, she appeared dead. They exchanged glances and Linkhart thought: “This isn’t a good start.”
Reynolds, then a professor at Colorado State University, pioneered the flammulated owl study in 1979, and the following year took an undergraduate student, Linkhart, up into the Pike National Forest to search for the owls. But having gotten his hands around the first owl, all Linkhart could think about it was how it was dead. Puzzling, he set owl down on the slope they were on, and watched as it rolled away, like a small log, from his feet. He scrambled to catch her – she was still looked dead
Then she stirred.
“All of sudden one eye pops open,” Linkhart recalled years later. “And then the other eye pops open. And you know, I’m not responding because I just can’t believe this. I can’t believe the whole thing.”
In a swift movement the owl stood up, looked around, and without a sound flew away. She was playing dead – a defensive mechanism. Reynolds and Linkhart breathed a collective sigh of relief. They never saw the owl again, but she became the first of more than 1,000 owls that Linkhart would go on to tag.
Sad silence
Thirty-three years later, Linkhart and Reynolds were trekking through the twilight of the Manitou Experimental Forest, searching for the owls that have become Linkhart’s hallmark, his passion.
It was late July, a chill, starry night in the forest west of Woodland Park, and Linkhart was in the midst of his annual summer study on the flammulated owls, or flams.
Reynolds had long since retired and just joined his former student for a night in the forest. Linkhart had long since become the foremost, if not the only, flammulated owl expert in the world – possibly everything known about the birds, from their defensive mechanisms to their migratory patterns, has come from his study. Linkhart, a Colorado College professor, strolled through the dark pines on that night with his headlamp off. While he collected a notebook, a pole and camera he can place in a high nest, Reynolds lay down on the forest floor to listen. It was unnaturally silent.
July is fledging time for the flams, when the young claw their way out of tree cavities they call home, and flop to the earth below. Little more than grey, sleepy fluff-balls, the owlettes can’t fly, and can’t feed themselves. Instead they will beg for food, perching in the nest entrance or in a nearby tree, waiting for their mothers and fathers to feed them. Yet not a single hungry peep came from this nest in a dead ponderosa pine snag.
Linkhart pushed his camera light and pole, like the antenna of an Anglerfish, up through the darkness and into the nest. Below, he and Reynolds stooped over a small remote screen to watch the owlettes inside the nest. After several minutes, the two owls – if they were owls – didn’t move.
“It’s not typical. We should be seeing movement,” Linkhart said. “It’s not quite right.”
A few days before, the owlettes had been alive, Linkhart said. Worried that the image was blurry, he pulled the camera lens out of the tree, lowered it, and cleaned it. Reynolds went back to lie down, and listen for other owls. But after his second “peep” into the tree cavity, Linkhart was certain. Nothing had changed in the nest. In his field notebook, where Linkhart writes down everything, he wrote: “21:00 – All quiet.”
It reminded him of a nest he found in 2006, when the babies starved death during a rainstorm that kept their parents away from the nest. “And I don’t think that’s the case here,” Linkhart said. “This nest, for two owlettes to be in juvenile plumage, to have gotten this far, and both suffered mortality in one shot, it seems a little unusual.”
“Hear that?” Reynolds interrupted. The men listened.
“Yup. That’s the female,” Linkhart said.
Linkhart stalked off to search the dead birds’ mother, following her defensive calls. He hoped that she would lead him to a bird that had made it out of the nest alive. But after 30 minutes, he gave up. The bird stopping crying and disappeared into the forest.
“I just think her behavior was just consistent with what a female behavior would be this time of year,” Linkhart said later. “She didn’t have anybody alive left.”
Ongoing study
Since the 2002 summer of the Hayman fire, Linkhart and a group of Colorado College students have been spending summers in the Manitou Experimental Forest studying flams.
Their days begin at 2 p.m., and carry on into the early hours of the morning, well after midnight, when the owls are active, hunting and flying around.The 33-year study had become the longest, most in-depth study of the birds worldwide. By this July, it had also brought Linkhart to the 1,000th owl he had tagged for study, a milestone that he and his students celebrated with cookies and champagne. That owl is far from the last. Linkhart would like to see the study continue indefinitely.
When Linkhart and Reynolds began the study in 1980, little to nothing was known about the flammulated owl, named for its flame-colored plumage, and from the Latin word, flamula.
Decades later, Linkhart knows his owls, and their territory. He has seen many owls nest in the same tree for years; he has chased them to Mexico, where in 2012 he determined they were spending their winters. Only twice has he come across inexplicable deaths of owlettes. Rains, starvation, cannibalism have all claimed the lives of the birds – but rarely does disease play a role. The deaths of the two dead owls he discovered in mid-July remain a mystery.
Small as they are, the owls have been key in unraveling some of the secrets of the ponderosa forest where they live. They like older growth forests, which have been cleansed by small wildfires and purged of younger trees. Unfortunately, “small” wildfires rarely happen in the Pike National Forest anymore – instead, there are megafires, like the Waldo Canyon and Hayman fires, that destroy the forest. After each of those fires, Linkhart noticed more owls in the study territory; he believes catastrophic fire pushed them into whatever patches of forest survived nearby.
Just before 3 p.m. on July 15, Linkhart and the crew drove into the forest to begin their day of work. Their work focuses in drainages and gulches where the owls live. In each, they use orange tape to tag every tree, always Aspens, where the owls nest in woodpecker-drilled cavities. Students climb ladders to reach the nests; they plunge their hands into the fist-sized cavity openings and pull the owls out. They carry them to the ground in soft sunglass bags.
The owls are teenagers by midsummer. The students have watched them hatch, weighed them, tagged them, carefully measured their feather lengths, and plucked relatively harmless parasites from their plumage. They are used to being pooped on – “signs of affection,” Linkhart jokes – and the students’ work pants are constantly smattered with owl excrement.
The students retrieve the owls daily. By the time the owls are ready to “fledge” – or leave the nest – there is no chance that their mother will abandon them, Linkhart said. The students and Linkhart would check the nests again that night to glimpse the owls making their first “flight.” By nightfall the owlettes are different creatures – they begin the transformation into nocturnal hunters.
“You know, you see the fledglings during the day, and they are these sleepy little things,” Linkhart said. “But it’s remarkable even on the first night how the behavior starts changing big time, they start getting really quiet, showing adult behavior. If you’re nearby they are not advertising themselves at all.”
That night, Linkhart and Reynolds drove deep into the northern part of the study area, called Missouri Gulch, to tag some owls and catch a male, some of whom were carrying geo-locators.
At 1:30 a.m., after all the teams had come back to the lodge, they gathered in Linkhart’s office to debrief the night. They were bleary-eyed, but Linkhart was impressed with their work
“Ok, guys,” he said. “To be continued.”
Three baby flammulated owls sit on the leg of Colorado College Flammulated Owl Project researcher Ross Calhoun as he prepares to weigh them in the Manitou Experimental Forest Sunday, July 7, 2013. Project leader and CC professor Brian Linkhart has been working with the flammulated owl for the past 33 years in an attempt to better understand the threatened species. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart climbs a ladder to retrieve and band a pair of baby owls as other members of his team help support the ladder in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Researchers with the Colorado College Flammulated Owl Project weigh a baby owl in the Manitou Experimental Forest Sunday, July 7, 2013. The researchers have been weighing and taking feather measurements of the babies at three different nest sits in the research area to better understand the development of the species. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl student researcher Max Ciaglo sits with a baby owl on his head before taking the mass and measuring the flight feathers of the owlet in the Manitou Experimental Forest Sunday, July 7, 2013. Max Ciaglo is the brother of Gazette photographer Michael Ciaglo. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researchers measure flight feathers in molt on an adult male owl in the Manitou Experimental Forest Sunday, July 7, 2013. This owl, like many captured in this study, are caught with mist nets strung across an open area. Another owl’s call is played from speakers and the wild owls will fly into the nets as they try to defend their territory from the intruder. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart checks his field notes after discovering what he suspects to be two dead baby owls in a nest in one of the study areas in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
An adult flammulated owl peers out of her nest before leaving to start gathering food at dusk in the Manitou Experimental Forest Saturday, July 6, 2013. Michael Ciaglo, The Gazette
An adult flammulated owl perches on a branch while Colorado College Flammulated Owl researchers retrieve her owlets from the nest in the Manitou Experimental Forest Saturday, July 6, 2013. Michael Ciaglo, The Gazette
A baby flammulated owl perches on the finger of a Colorado College researcher in the Manitou Experimental Forest Saturday, July 6, 2013. Michael Ciaglo, The Gazette
An adult male flammulated owl returns to his nest with food for his owlets in the Manitou Experimental Forest Sunday, July 7, 2013. Flammulated Owls survive on a diet that consists mostly of insects. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Ross Calhoun climbs a ladder to reach an owl nest in the Manitou Experimental Forest Sunday, July 7, 2013. Researchers weigh and take feather measurements from owlets in three nests everyday. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Ross Calhoun sets owlets back on his lap after coloring the top of their heads in the Manitou Experimental Forest Sunday, July 7, 2013. The coloring on their heads, done with a marker, helps researchers keep track of individual owl development. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Ross Calhoun takes flight feather measurements of a baby owl in the Manitou Experimental Forest Sunday, July 7, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Ross Calhoun takes flight feather measurements of a baby owl in the Manitou Experimental Forest Sunday, July 7, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Ross Calhoun sets up a mist net in an attempt to catch an adult owl to map their territory at one of the study sites in the Manitou Experimental Forest Sunday, July 7, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Ross Calhoun removes an adult male owl from a mist net in the Manitou Experimental Forest Sunday, July 7, 2013. Researchers set up the nets in open areas and play a territorial call on an MP3 player to entice an owl to investigate the call. When the owls get too curious, they get caught in the net. Michael Ciaglo, The Gazette
Researchers with the Colorado College Flammulated Owl Project take the mass of an adult owl in the Manitou Experimental Forest Sunday, July 7, 2013. Michael Ciaglo, The Gazette
Researchers with the Colorado College Flammulated Owl Project take masses and feather measurements of baby owls in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Researchers with the Colorado College Flammulated Owl Project take masses and feather measurements of baby owls in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Collin Knauss hold onto an owlet before weighing and taking wing measurements in the Manitou Experimental Forest Monday, July 15, 2013. This owl is just a few days away from leaving the nest. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Collin Knauss hold onto an owlet before weighing and taking wing measurements in the Manitou Experimental Forest Monday, July 15, 2013. This owl is just a few days away from leaving the nest. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart leads a group of researchers into the field to put bands on baby owls to help track them in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Collin Knauss hold a net over the entrance to a nest in the Manitou Experimental Forest Monday, July 15, 2013. The owl did not fly into the net but was grabbed later as it was hiding inside the nest. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project researcher Collin Knauss helps to support a ladder as another researcher expands the entrance to a nest to retrieve the owlets in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart climbs a ladder to retrieve and band a pair of baby owls as other members of his team help support the ladder in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart retrieves a pair of baby owls from their nest in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart leads his group of student researchers out of the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Researchers with the Colorado College Flammulated Owl Project live just outside their study areas in the Manitou Experimental Forest. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart, right, shows a live video stream from inside an owl nest to fellow CC professor Marc Snyder, left, and Linkhart’s graduate school professor Richard Reynolds while in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader Brian Linkhart prepares to raise up a video camera to give him a live look at activity inside an owl nest in the Manitou Experimental Forest Monday, July 15, 2013. Unfortunately, he found no activity, only what appeared to be two deceased owlets. Michael Ciaglo, The Gazette
Colorado College biology professor Marc Snyder examines a video screen as Flammulated Owl Project leader Brian Linkhart attempts to confirm whether the two owlets on camera are deceased. Michael Ciaglo, The Gazette
Colorado College Flammulated Owl Project leader brian Linkhart sets up a mist net in an attempt to catch an owl that had been fitted with a GPS backpack last year. The owl must be caught again to recover all the data the GPS has stored over the last year. Michael Ciaglo, The Gazette
Kirsten Becker, who was a researcher on the Flammulated Owl Project from 2007-2010, listens in as current team member debrief after a night out in the forest Monday, July 15, 2013. Michael Ciaglo, The Gazette
An adult female flammulated owl sits on Brian Linkharts fingers before flying away after she was captured from her nest in the Manitou Experimental Forest Monday, July 15, 2013. Michael Ciaglo, The Gazette