Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Ostrich | Hamerkop | Hadeda Ibis | African Spoonbill | Whitefaced Duck | Knobbilled Duck |
| --- | --- | --- | --- | --- | --- |
| Egyptian Goose | Secretary Bird | Cape Vulture | Lappet-faced Vulture | White-backed Vulture | Tawny Eagle |
| Wahlberg's Eagle | Martial Eagle | Brown Snake Eagle | Black-breasted Snake Eagle | Bateleur | African Fish Eagle |
| Dark Chanting Goshawk | Gabar Goshawk | Crested Francolin | Swainson's Francolin | Common Quail | Melba Finch |
| Helmeted Guineafowl | Blue Waxbill | Violet-eared Waxbill | White-browed sparrow weaver | Paradise Whydah [ disambiguation needed ] | Kori Bustard |
| Lesser Masked Weaver | Black Korhaan | Redcrested Korhaan | Crowned Plover | Blacksmith Plover | Spotted Dikkop |
| Double-banded Sandgrouse | Rock Pigeon | Red-eyed Dove | Cape Turtle Dove | Laughing Dove | Namaqua Dove |
| Green-spotted Dove | Grey Lourie | Jacobin Cuckoo | Diederik Cuckoo | Burchell's Coucal | Barn Owl |
| White-faced Owl | Pearl-spotted Owlet | Flernecked Nightjar | Rufous-cheeked Nightjar | European Bee-eater | Little Bee-eater |
| Blue-cheeked Bee-eater | European roller | Purple Roller | Lilac-breasted Roller | Hoopoe | Grey Hornbill |
| Yellow-billed Hornbill | Red-billed Hornbill | Pied Barbet | European Swallow | Fork-tailed Drongo | Pied Crow |
| Brown-hooded Kingfisher | Titbabbler | Puffback | Long-billed Crombec | Wattled Starling | Burchell's Starling |
Question:
What is the Hadeda Ibis when the Knobbilled Duck is Pied Crow?
Answer:
Pied Barbet