The pro­vid­ed text is extreme­ly brief and lacks the con­tent nec­es­sary for a mean­ing­ful sum­ma­ry that adheres to your require­ments. It pri­mar­i­ly con­sists of a title, a date, a loca­tion, and min­i­mal con­tex­tu­al infor­ma­tion relat­ed to crow pop­u­la­tion.

If you could pro­vide a more sub­stan­tial chap­ter or addi­tion­al con­tent, I would be able to cre­ate a sum­ma­ry that fol­lows your spec­i­fi­ca­tions.