diff --git a/src/main.rs b/src/main.rs
index 8961396..eb3cf70 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,7 +4,7 @@ use std::time::Duration;
 use anyhow::Context;
 
 use chrono::{NaiveDateTime, Utc};
-use image::{DynamicImage, GenericImageView, Pixel};
+use image::{GenericImageView, Pixel};
 use log::{debug, error, info};
 
 /// Folder the camera images are uploaded to
@@ -39,7 +39,7 @@ const THUMB_H: usize = 8;
 
 /// Threshold for bird detection.
 /// Bird is detected if the sum of deviations from a median value in a picture exceeds this threshold.
-const THRESHOLD_DEVIATION: u32 = 500;
+const THRESHOLD_DEVIATION: u32 = 600;
 
 fn main() {
     env_logger::init();
@@ -77,8 +77,7 @@ fn process_camera_pics() -> anyhow::Result<()> {
 
 
     struct Pic {
-        crop: DynamicImage,
-        // the actual thumb is sized to fit here, it can be a bit smaller
+        full_path: PathBuf,
         thumb: [u8; THUMB_H * THUMB_W],
         timestamp: i64,
         filename: String,
@@ -108,7 +107,7 @@ fn process_camera_pics() -> anyhow::Result<()> {
         let thumb = crop.thumbnail(THUMB_W as u32, THUMB_H as u32);
 
         let mut pic = Pic {
-            crop,
+            full_path: dir_entry.path(),
             thumb: [0u8; THUMB_H * THUMB_W],
             timestamp: meta.mtime(),
             filename: dir_entry.path().file_name().unwrap_or_default()
@@ -156,17 +155,17 @@ fn process_camera_pics() -> anyhow::Result<()> {
 
             let datetime_str = parse_unix_ts(pic.timestamp).format("%Y-%m-%d_%H-%M-%S");
             let path = format!("{}/{}.jpg", FOLDER_WITH_BIRD_IMAGES, datetime_str);
-            let mut pb = PathBuf::from(path);
+            let mut target_path = PathBuf::from(path);
 
             // Ensure we do not overwrite a file if there are multiple in the same second!
             // This adds -2, -3 etc. to the file name
             let mut cnt = 2;
-            while pb.exists() {
-                pb.set_file_name(format!("{}-{cnt}.jpg", datetime_str));
+            while target_path.exists() {
+                target_path.set_file_name(format!("{}-{cnt}.jpg", datetime_str));
                 cnt += 1;
             }
 
-            if let Err(e) = pic.crop.save(pb) {
+            if let Err(e) = std::fs::copy(pic.full_path, target_path) {
                 error!("Fail to save pic: {e}");
             }
         }