This subject of the checks to increase has been ably treated by several authors, and I hope in a future work to discuss it at considerable length, more especially in regard to the feral animals of South America.
Gehikuntzarako oztopoen kontu hau trebeki tratatu dute autore batzuek, eta hurrengo lan batean hedadura handiaz aztertzea espero dut, bereziki Hego Amerikako zenbait basapiztiari dagokionez.