To the group of vagrants we classified 52 species of birds which haven’t been observed in the nature reserve more than five times. In Škocjanski zatok several rarely seen species of birds were encountered, such as Greater Flamingo (Phoenicopterus ruber), Slender-billed Gull (Larus genei), and Little Bustard (Tetrax tetrax). Among the reserve’s exceptional guests are also Red-crested Pochard (Netta rufina), Caspian Tern (Sterna caspia) and Glossy Ibis (Plegadis falcinellus), the species that regularly occur in Slovenia in small numbers.
This group also includes the alochtone species, brought to Slovenia by humans. In the spring of 2007, three Black Swans (Cygnus atratus) were staying in the area.
The list of exceptional guests:
- Black Swan (Cygnus atratus)
- Greater Flamingo (Phoenicopterus ruber)
- Green-winged Teal (Anas carolinensis)
- Greater Scaup (Aythya marila)
- Red-crested Pochard (Netta rufina)
- Goosander (Mergus merganser)
- Red-breasted Merganser (Mergus serrator)
- Ruddy Shelduck (Tadorna ferruginea)
- Lesser White-fronted Goose (Anser erythropus)
- Red-breasted Goose (Branta ruficollis)
- Oystercatcher ( Haematopus ostralegus)
- Pectoral Sandpiper ( Calidris melanotos)
- Broad-billed Sandpiper (Limicola falcinellus)
- Corn Crake (Crex Crex)
- Griffon Vulture (Gyps fulvus)
- Black Kite (Milvus migrans)
- Osprey (Pandion haliaetus)
- Booted Eagle (Hieraaetus pennatus)
- Grey Partridge (Perdix perdix)
- Little Bustard (Tetrax tetrax)
- Collared Pratincole (Glareola pratincola)
- Slender-billed Gull (Chroicocephlus genei)
- Herring Gull (Larus argentatus)
- Lesser Black – backed Gull (Larus fuscus)
- Little Gull (Hydrocoelus minutus)
- Kittiwake (Rissa tridactyla)
- Caspian Tern (Hydroprogne caspia)
- European Honey-buzzard (Pernis apivorus)
- Citrine Wagtail (Motacilla citreola)
- Carrion Crow (Corvus corone corone)
- Rook (Corvus frugilegus)
- Common Redpoll (Carduelis flammea)
- Pallid Swift (Apus pallidus)
- Short-toed Lark ( Calandrella brachydactyla)
- White-throated Dipper (Cinclus cinclus)
- Rosy starling (Pastor roseus) – 2017
- Great spotted cuckoo (Clamator glandarius) – 2018
- Stone Curlew (Burhinus oedicnemus) – 2018
- Mandarin duck (Aix galericulata) – 2018
- Turnstone (Arenaria interpres) – 2019
- Spotted Eagle (Clanga clanga) – 2019
- Bullfinch (Pyrrhula pyrrhula) – 2019
- Egyptian Goose(Alopochen aegyptiaca) – 2019
- Nuthatch (Sitta europaea) – 2019
- Gannet (Morus bassanus) – 2020
- Sacred Ibis (Threskiornis aethiopicus) – 2021
- Baillon’s Crake (Porzana pusilla (Zapornia pusilla)) – 2021
- Grey-headed Lapwing (Vanellus cinereus) – 2021
- Pallid Harrier (Circus macrourus) – 2022
- Lesser Spotted Woodpecker (Dryobates minor) – 2022
- Red-throated Pipit (Anthus cervinus) – 2023
- Black-winged kite (Elanus caeruleus) – 2023