This is a notably relevant paper from 2019, that appears to be keeping track of eggs
“Our custom SSD object detection and classification model classified when chickens and eggs were detected by the video camera. Our models can label video frames with classifications for 8 breeds of chickens and 4 colors of eggs, with 98% accuracy on chickens or eggs alone and 82.5% accuracy while detecting both types of objects.”
“Tuned accuracy is needed for proper thresholding of object detection”
https://scholar.smu.edu/cgi/viewcontent.cgi?article=1073&context=datasciencereview (https://scholar.smu.edu/datasciencereview/vol2/iss1/20/)
Also interesting,
Factors Affecting Egg Production in Backyard Chicken
Flocks