Gouache style, Beautiful detailed ，（The swallow's father and mother are feeding the little swallows in the nest），（A little swallow opens its mouth，Using immature mouths to fight for the bugs brought by the mother.），Feathers shine with blue-black sheen，Each piece is like a carefully polished gem，Exudes a charming light， The nest is sometimes built in a tree cavity，The nest is mainly made of a mixture of mud and saliva，cup or disk，The nest has a rough appearance，Color is gray or brown，The color is slightly lighter， （Little swallow and nest covered with snow），（Bottom-up perspective：0.8）

(teeth), verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))