tits

n.

以牙还牙( tit的名词复数 )；小马；山雀；奶头

tit for tat以牙还牙，针锋相对

Blue tits are ultraviolet tits
Nestling Weight and Survival in Individual Great Tits (Parus major)
The costs of egg production and incubation in great tits (Parus major)
Immunocompetence of nestling great tits in relation to rearing environment and parentage
Warmer springs lead to mistimed reproduction in great tits (Parus major)
Ultraviolet sexual dimorphism and assortative mating in blue tits
Repeatability and heritability of exploratory behaviour in great tits from the wild
Differential Post-Fledging Survival of Great and Coal Tits in Relation to Their Condition and Fledging Date
Haematological Health State Indices of Reproducing Great Tits: Methology and Sources of Natural Variation
Are avian blood parasites pathogenic in the wild? A medication experiment in blue tits (Parus caeruleus).