Possible Clues:

• Place for the keeping and breeding of certain long-necked birds
• Is this a pen-supplier? Answer (Y/N) after review
• New yarns composed: pens productive here?
• Place for breeding waterfowl
• Place where large birds are kept or bred
• Place to put pens etc?
• New pair with hesitation occupying rock where some birds breed
• Losing head, Henry's wrongly storing pasty where cobs go?
• Wildfowl sanctuary
• Where pens may be productive, composing new yarns