Some tiny birds take bold risks to gather a beakful of hair for their nests. Titmice have been spotted dive-bombing cats, alighting on dozing predators’ backs and plucking strands of hair from ...

They think having predator's hair in nest may be a way for birds to deter attacks; By SAM TONKIN FOR MAILONLINE. Published: 07:32 EDT, 2 August 2021 | Updated: 07:37 EDT, 2 August 2021 .

Birds, especially young chicks, can become entangled in them, leading to deaths or the loss of a foot. Dog and cat fur is also risky, especially if the pet has been treated for ticks and fleas.