The Golden Retriever is still used as a gundog by sportsmen, both as a hunting companion in the field and for competing in field trials. Those used as gundogs are usually from working lines specialising in breeding dogs for field use, those from pet or show lines rarely being suited for field use. A Golden Retriever with a traditional, dense double coat is very well suited for working in very cold and wet conditions as their coats provide them a great deal of water resistance and insulation. Compared to other retriever breeds, the Golden Retriever is not considered a particularly strong swimmer, because of their long coats they tend to sit quite low in the water and they are considered less suited as a wildfowl hunting dog than it is for retrieving land-based gamebirds like grouse and partridge. The breed is much less commonly used by sportsmen as a hunting companion than the Labrador Retriever. One reason the breed is less popular than the Labrador for field use is they are generally slower to mature; when a Golden Retriever is still in basic training a Labrador may have already had a season in the field. Another is the breed's long coat which requires a great deal more maintenance and grooming than that of the Labrador's, particularly after working in muddy conditions or close cover, as the long hair is more prone to picking up dirt and burrs. Additionally it can be hard for sportsmen to find pups bred from proven working lines because of the far greater numbers Golden Retrievers bred as pets or for the show ring.