Hi just got 2 Aylesbury ducklings from an auction , think they are between 2 and 4 weeks old both female. At this age do they need a heat lamp or will they be ok without? I'm in the U.K so it's our summer so not extremely hot but not cold either. At the moment in a crate in the house planning on keeping them inside until fully feathered. Any advice on this breed or duck care in general, feed, care, does and don'ts etc, would be appreciated as although i keep chickens i am new to ducks and want to get it right.