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Saw no new birds but an unusual number of rough legged hawks, probably 50 or more in the trees along the roads or sitting on the ground out in the field. All of the birds previously noted seem to be more numerous and cover new territory.

The microtus in the cages to which I had fed some of the ^[[arsenic]] poisoned wheat & barley had all died, while those fed phosphorus poisoned wheat were about half dead. It is probable that too much phosophorus was used and the taste & odor were offensive & hence it was not eaten. 

I had about 100 dead mice to carry away, but saved the heads of a lot of the males and examined probably 50 females to see if they are still breeding. Not one showed signs of pregnancy, and I have not seen any young less than one third grown, or probably a month old. The breeding season seems to be entirely over & I would not be surprised if the birds preying on