diff --git a/rogueviz/ru/classes.cpp b/rogueviz/ru/classes.cpp
index bd9c0010..af7cd7db 100644
--- a/rogueviz/ru/classes.cpp
+++ b/rogueviz/ru/classes.cpp
@@ -303,6 +303,27 @@ struct boar : public enemy {
   string get_help() override { return "Beware their tusks."; }
   };
 
+struct snake : public enemy {
+  int dir;
+  xy siz() override { return {18, 8}; }
+  string glyph() override { return "S"; }
+  color_t color() override { return 0x20D020FF; }
+  void act() override;
+  void attacked(int s) override;
+  string get_name() override { return "snake"; }
+  string get_help() override { return "A nasty dungeon snake."; }
+  };
+
+struct kestrel : public enemy {
+  xy siz() override { return {10, 10}; }
+  string glyph() override { return "K"; }
+  color_t color() override { return 0xD0A0A0FF; }
+  void act() override;
+  void attacked(int s) override;
+  string get_name() override { return "kestrel"; }
+  string get_help() override { return "A standard dungeon kestrel."; }
+  };
+
 struct hint : public entity {
   string hint_text;
   int state;
diff --git a/rogueviz/ru/entity.cpp b/rogueviz/ru/entity.cpp
index 5b2d5253..7da97f6d 100644
--- a/rogueviz/ru/entity.cpp
+++ b/rogueviz/ru/entity.cpp
@@ -288,6 +288,26 @@ void boar::attacked(int dmg) {
   if(on_floor) vel.x = dat.d * dat.modv * s * 2, vel.y = -dat.d * dat.modv * 2.5;
   }
 
+void snake::act() {
+  kino();
+  if(abs(vel.x) < 1e-6) {
+    auto dat = get_dat();
+    vel.x = zero_vel.x + dat.d * dat.modv * dir;
+    dir = -dir;
+    }
+  if(intersect(get_pixel_bbox(), m.get_pixel_bbox())) {
+    if(m.reduce_hp(25)) addMessage("The snake bites you!");
+    }
+  }
+
+void snake::attacked(int dmg) {
+  current_target = this;
+  reduce_hp(dmg);
+  if(!existing) addMessage("You kill the snake."); else addMessage("You hit the snake.");
+  if(where.x < m.where.x) vel.x = -abs(vel.x);
+  if(where.x > m.where.x) vel.x = +abs(vel.x);
+  }
+
 void hint::act() {
   bool cur = intersect(get_pixel_bbox(), m.get_pixel_bbox());
   if(cur && !state) {
@@ -323,5 +343,60 @@ void moving_platform::act() {
   where = location_at(gframeid);
   }
 
+void kestrel::act() {
+  int loopcount = 0;
+  again:
+  loopcount++;
+
+  auto obb = pixel_to_block(get_pixel_bbox());
+  auto nbb = pixel_to_block(get_pixel_bbox_at(where + vel));
+  auto jbb = join(obb, nbb);
+
+  flagtype blocking = (W_BLOCK | W_BLOCKBIRD);
+
+  if(loopcount >= 100) return;
+
+  for(int x = obb.minx; x < obb.maxx; x++) for(int y = obb.maxy; y < jbb.maxy; y++) {
+    eWall b = current_room->at(x, y);
+    if(walls[b].flags & blocking) {
+      vel.y = -vel.y; goto again;
+      }
+    }
+
+  for(int x = obb.minx; x < obb.maxx; x++) for(int y = jbb.miny; y < obb.miny; y++) {
+    eWall b = current_room->at(x, y);
+    if(walls[b].flags & blocking) {
+      vel.y = -vel.y; goto again;
+      }
+    }
+
+  for(int x = nbb.minx; x < nbb.maxx; x++) for(int y = jbb.miny; y < jbb.maxy; y++) {
+    eWall b = current_room->at(x, y);
+    if(walls[b].flags & blocking) {
+      vel.x = -vel.x; goto again;
+      }
+    }
+
+  for(int x = obb.maxx; x < jbb.maxx; x++) for(int y = jbb.miny; y < jbb.maxy; y++) {
+    eWall b = current_room->at(x, y);
+    if(walls[b].flags & blocking) {
+      vel.x = -vel.x; goto again;
+      }
+    }
+
+  apply_vel();
+
+  if(intersect(get_pixel_bbox(), m.get_pixel_bbox())) {
+    if(m.reduce_hp(15)) addMessage("The kestrel claws you!");
+    }
+  }
+
+void kestrel::attacked(int dmg) {
+  current_target = this;
+  reduce_hp(dmg);
+  if(!existing) addMessage("You kill the kestrel."); else addMessage("You hit the kestrel.");
+  if(where.x < m.where.x) vel.x = -abs(vel.x);
+  if(where.x > m.where.x) vel.x = +abs(vel.x);
+  }
 
 }
diff --git a/rogueviz/ru/globals.cpp b/rogueviz/ru/globals.cpp
index 0a27d331..719f39cc 100644
--- a/rogueviz/ru/globals.cpp
+++ b/rogueviz/ru/globals.cpp
@@ -64,6 +64,7 @@ flagtype W_STAIRCASE = 8;
 flagtype W_PAIN = 16;
 flagtype W_BOUNCY = 32;
 flagtype W_FROZEN = 64;
+flagtype W_BLOCKBIRD = 128;
 
 constexpr int qwall = int(wGUARD);
 
@@ -71,8 +72,8 @@ ruwall walls[qwall] = {
   {"air", ".", 0x40404080, W_TRANS, "Looks like an empty space, but actually necessary for survival."},
   {"wall", "#", 0xFFFFFFFF, W_BLOCK, "These kinds of tough walls can never be destroyed."},
   {"bouncy wall", "#", 0x80FF80FF, W_BLOCK | W_BOUNCY, "Like walls, but things bounce off them."},
-  {"spike", "^", 0xC08080FF, W_TRANS | W_PAIN, "Dangerous!"},
-  {"water", "~", 0x0000FFFF, W_BLOCK | W_TRANS, "Not used yet."},
+  {"spike", "^", 0xC08080FF, W_TRANS | W_PAIN | W_BLOCKBIRD, "Dangerous!"},
+  {"water", "~", 0x0000FFFF, W_BLOCK | W_TRANS | W_BLOCKBIRD, "Not used yet."},
   {"frozen water", "#", 0xC0C0FFFF, W_BLOCK | W_FROZEN, "Water magically turned into a slippery wall."},
   {"door", "+", 0xC06000FF, W_BLOCK, "Attack the doors with your weapon to open them."},
   {"smashed door", "'", 0xC06000FF, W_TRANS, "This door has been already opened."},
@@ -81,9 +82,9 @@ ruwall walls[qwall] = {
   {"magic fountain (active)", "!", 0xA0A0FFFF, W_TRANS, "Wow! An active magic fountain!"},
   {"blue portal", "=", 0x4040C0FF, W_TRANS, "Blue portal."},
   {"orange portal", "=", 0xC08040FF, W_TRANS, "Orange portal."},
-  {"platform", "-", 0xFFFFFFFF, W_PLATFORM | W_TRANS, "You can fall down through such platforms."},
+  {"platform", "-", 0xFFFFFFFF, W_PLATFORM | W_TRANS | W_BLOCKBIRD, "You can fall down through such platforms."},
   {"staircase", "-", 0xFFFF80FF, W_PLATFORM | W_TRANS | W_STAIRCASE, "You can climb staircases and ladders." },
-  {"column", "|", 0x40404080, W_TRANS, "A background decoration." },
+  {"column", "|", 0x40404080, W_TRANS | W_BLOCKBIRD, "A background decoration." },
   {"forge", "&", 0xB0202080, W_TRANS | W_PAIN, "Used by runesmiths."},
   };
 
diff --git a/rogueviz/ru/map.ru b/rogueviz/ru/map.ru
index 48e6c5cc..1dfc7dc1 100644
--- a/rogueviz/ru/map.ru
+++ b/rogueviz/ru/map.ru
@@ -425,6 +425,14 @@ What a shiny crystal ball!
 ITEM 75 200 20
 gold
 You found 20 gold pieces
+KESTREL 85 66 15 15
+KESTREL 527 65 20 10
+KESTREL 309 211 10 20
+KESTREL 100 190 25 5
+KESTREL 561 198 25 5
+SNAKE 111 220 1
+SNAKE 549 234 1
+SNAKE 493 135 1
 OK
 
 MOVE 2 Dungeon Entrance
diff --git a/rogueviz/ru/save.cpp b/rogueviz/ru/save.cpp
index 3f735e8a..71655785 100644
--- a/rogueviz/ru/save.cpp
+++ b/rogueviz/ru/save.cpp
@@ -134,6 +134,19 @@ void load_room(fhstream& f, cell *c) {
         b->respawn = b->where;
         r.entities.emplace_back(std::move(b));
         }
+      else if(cap == "KESTREL") {
+        auto b = std::make_unique<kestrel>();
+        sscanf(param.c_str(), "%lf%lf%lf%lf", &b->where.x, &b->where.y, &b->vel.x, &b->vel.y);
+        b->vel *= xy(block_x, block_y) / game_fps;
+        b->respawn = b->where;
+        r.entities.emplace_back(std::move(b));
+        }
+      else if(cap == "SNAKE") {
+        auto b = std::make_unique<snake>();
+        sscanf(param.c_str(), "%lf%lf%d", &b->where.x, &b->where.y, &b->dir);
+        b->respawn = b->where;
+        r.entities.emplace_back(std::move(b));
+        }
       else if(cap == "FERRIS") {
         ld cx, cy, radius; int qty;
         sscanf(param.c_str(), "%lf%lf%lf%d", &cx, &cy, &radius, &qty);