New research has found that global warming is playing havoc with the timing of some birds reproduction.
Air pollution is fading the bright colours of great tits Parus major, with possible dire consequences, according to new research from Finland.
Some people might expect that, after copulation, a male’s battle to reproduce is over - he can turn his attentions elsewhere or simply roll over and go to sleep. But in fact, the fight has just begun. Females may receive sperm from several males in a short period, and if one males’ sperm are somehow better at reaching the female’s eggs than the rest, he will be the one to father the offspring - there’s no prize for second place.