Why are more female monarchs recovered at the over wintering sites

Why are more female monarchs recovered at the over wintering sites than males you ask. It is the difference between having a thicker thorax or thicker wings….to read more you must be a professional member. Click here to join. 

[wa_restricted roles=”professional member, professional member bundle, reciprocal” login_label=”AFB login” message=”You must be a professional member to Association for Butterflies receive access to this content”][pdf-embedder url=”https://afbeducation.org/wp-content/uploads/2019/02/cabbage-whites-in-the-class-room.pdf” title=”cabbage whites in the class room”][/wa_restricted]