I have 12 girls (6 hens 6 pullets 19-24 weeks ) only 1 has not been confirmed laying. 5 are ameraucana/EE, 2 barred rock, 1 RR(or PR) and 4 mixed. Overall most are consistent layers. 1EE is the one not laying. Of the other 4, 2 are consistent 2 haven't laid in about a week. All other girls are laying consistently. Of the 2 EE that are not currently laying one all black (black betty) and one dark brown with yellow (cocoa bean) are my darkest girls. Inclouding the RR I have 3 that are dark red colors but those 2 are possibly that darkest of the mix. Are ameraucana/EE possibly more heat sensitive then other hens? Or is it possible that these 2 because of their darker color are more sensitive then others? 1 is older laying from last year and 1 started laying about 6-8 weeks ago. Temps have been in the upper 90s for a while but this week will get over 110.