A symbol for individuals not adult males

The present biological symbols ♂ and ♀ indicate the two sexes, male and female. The suggested introduction of a third symbol {Brit. Birds 71: 544-545) seems strangely illogical. If the sex is not known, then the absence of a sex symbol would be more appropriate. The question of recording 'autumn' birds is really an issue of plu

...

Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now