Gouache style, Beautiful detailed ，（Mother swallow is feeding the little swallow in the nest），（Two little swallows open their mouths，Use their young mouths to fight for the little bugs brought by their mothers。.），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，It's smoother inside，The color is slightly lighter， background：（snow covered nest）

(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))