Training in a pa28 in Melbourne many years ago, light rain showers and on rotation collected a small flock of seagulls. The windscreen went red like a 007 film. Finished the circuit and rolling out was a seagull head on the runway...the rest of it (and its mates) ceased to exist.
Also hit a bat one night in a shrike. Dinged the leading edge. Clearly the bat's TCAS was u/s....