"The creek population is declining," I said. "Not dramatically, but the trend is there. Three years of data shows a fifteen percent reduction in beaver activity in this section, which cascades into everything downstream."
Declan was looking at the movement map I had spread across the hood of my equipment case, his arms crossed, his weight slightly forward. He had been standing like that for twenty minutes, which was something I had started to notice about him: he did not shift around when he was listening. Most people made small adjustments but he goes still.
"What causes the reduction?" he asked.
"Pressure from the north. Something is pushing the population south along this corridor and the southern end doesn't have adequate habitat to absorb the displacement." I traced the movement line with my finger. "Whatever is generating that pressure is large, consistent, and has been using this specific route for at least eighteen months based on the vegetation impact data."
He looked at the map. Not at me. At the map.
This was our third meeting in ten days. The first had lasted an hour. The second had gone longer, two hours at least, and had ended when I realised the light was going and I had not eaten since morning. This one had started at half past ten when he appeared at the northern edge of the station clearing, we had exchanged pleasantries. Somehow we were now standing at my equipment case at half past three in the afternoon and I had five hours of conversation in my head to account for.
I was not sure how that had happened.
I was not sure I minded.
We had talked about the corridor data and the beaver population and the pressure patterns. We had talked about field methodology and the limitations of camera trap evidence and the specific problem of drawing population conclusions from movement data alone. At some point we had sat down on the log near station seven and I had talked about my doctoral research and he had asked questions that were more specific than people usually asked, the kind of questions that came from someone who had been paying attention to the answer rather than waiting for a gap to speak.
And then, at some point I could not precisely identify, we had stopped talking about the research.
I had told him about my father's opinion of fieldwork as a career, specifically Emeka's position that spending years alone in forests was a choice a person made when they were running from something or toward something and that either way they should know which one it was. I had told him about the two years I spent in Kenya on a fellowship and the specific quality of homesickness that arrived not as sadness but as a smell, rain on dry ground, a very specific Lagos smell that hit me once in a market in Nairobi and stopped me completely.
I did not usually tell people those things.
He had not offered equivalents, had not matched my disclosures with his own the way people did when they were performing conversation. He had just listened with that complete attention and asked one question about Kenya that made me talk for another twenty minutes.
Now it was half past three and the afternoon light was going flat and I was aware, standing at my equipment case, that five hours had passed and I had not once thought to check the time.
I rolled up the movement map and said, "I added a new station this week. Ten. Western edge of the corridor."
"I saw it," he said.
I looked at him.
"I walked the boundary yesterday," he said, in the same even tone he used for everything. "Standard perimeter check."
"The placement is deliberate," I said. "Something has been triggering the motion sensors on that western edge consistently. Always between ten at night and two in the morning. Nothing on the footage but the sensors don't lie."
I watched his face when I said it. I had been watching his face for five hours and I had learned that it did not give much away as a general rule, but that there were small things if you paid attention. A slight tension around the jaw when something landed differently than expected. A quality of stillness that changed register depending on what he was processing.
His face did not change when I mentioned the sensors.
I noted this.
"Probably deer," he said.
"Deer don't trigger the western sensors without appearing on the eastern ones. The coverage overlaps. Whatever is coming in from the west is avoiding the eastern cameras specifically."
He looked at the tree line.
"I'll look into it," he said.
I let it go. I picked up my equipment kit and looped it over my shoulder. “I need to get back to the station before the light goes out completely”
“Of course,” he said
We walked the first part of the trail back in the particular silence of two people who have run out of the kind of talk that fills silence and have not yet decided whether the silence itself needs filling.
At the fork where his route back to the boundary split from my route to the station, he stopped.
"The beaver data," he said. "The pressure pattern from the north. Have you cross-referenced it against seasonal movement cycles or is the consistency year-round?"
"Year-round," I said. "Which is part of what makes it unusual. Most large predator pressure follows seasonal food distribution. This doesn't."
He nodded slowly. Not the nod of someone processing new information. The nod of someone confirming what they already knew.
I filed that too.
"Good evening," he said, and turned back toward the boundary without waiting for me to respond.
I watched him go for a moment. He moved through the trees the same way he stood still, with a quality I did not have a clean scientific term for. Like the ground knew him.
I turned and walked back to the station.
The whole way I tried to identify the exact point in the last five hours when I had stopped cataloguing the conversation as professional contact and started simply being in it. I could not find the point. It had not felt like a transition. It had felt like the conversation had simply been happening and I had been in it and the categories I usually applied had not come up because they had not seemed necessary.
That was worth noting.
I pushed open the station door and dropped my kit on the floor and sat down at the desk and opened my laptop. The camera system interface loaded automatically. I clicked on station ten, the western tree line camera, and pulled up the previous forty-eight hours of footage.
I leaned forward.
The timestamp read eleven forty-seven PM, two nights ago. The motion sensor log showed a twelve-minute trigger. The footage showed nothing. Just the tree line and the dark and the slight movement of branches in a wind that had been light that night.
Twelve minutes of triggered sensors and nothing on the camera.
I went back further. The night before that: nine minutes, same result. The night before that: seventeen minutes. All between ten PM and two AM. All on the western sensor. Nothing on the footage every single time.
I sat back in my chair.
Something was triggering those sensors for up to seventeen minutes at a time and not appearing on camera, which meant it knew where the camera was.
I clicked back to the most recent trigger and looked at the tree line in the footage and thought about a man who walked through old growth without making a sound and who, when I mentioned the sensors, had not changed his expression at all.
I reached for my notebook.