Hello
It's definately something coming around ,lurking and terrifying your flock. I have Ferrets ,and learned everything I could find before bringing them into our family...except the fact that if you own a bird or chicken or duck...i.e. Feathered creatures you should consider opting for a hamster.
(Anyhow,I talk way toooo much,so sorry the habit rolls on over to speaking with my fingers

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So my chickens I've fallen in love with ....along comes these spirited ,adorable lil weasels whome I've adored from
petco visits thru the years but never knew anything AT ALL about them...and I'm not exaggerating the "AT ALL" part ,let me tell ya
Son can't keep em,mom will you take em? "Of course! " they're adorable ,how could anyone say no to a ferret face ,let alone two. And we all lived happily ever after... ( I swear my momma cat Bella and Jasper my white ferret are having a love affair

anyway...sorry )Until the day I adopted a widow duck and ,being winter I brought her in for a couple hours to play in the tub,kids loved watching her have fun ,she is just so sweet . ...and all is going swell....bath time ends,I let her dry up by walking around a bit before going back to her chicken sisters and I hear "OH MY GAWD! LILLY!! LILLY OH MY GAWD"
With the saddest chorus of a crying ,dying duck. I run in to see my mother holding the duck (daisy) in one arm and literally shaking and pulling my Jackson (sable ferret) in the other....he locked on to daisys neck and was strangling her .mom told me she thought she was going to have to kill jack or rip her neck off while he had ahold of it.but he stopped and she lived and ,I didn't think once I should get rid of the ferrets ,though everyone else did

(to know one is to love one )
( can I digress or what
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Wow. So I'll save you all right now and stop talking about my ferrets vs duck ordeal, save it for another thread ,I'm so sorry.
I just meant to say ,yes your girls are terrified ,and yes it's most likely your enormous coyote ,his friends and their friends as well .... And I think I'm pretty positive on this due to the way my chickens react when they see jazz or Jack ,as well as when their big poppa pepper (
such a brave roo ) sacrificed his self for the flock ...the girls tried roosting up on the loft floor above the coop ,or on ladders ...high up,but not "trapped" for at least a few days after peppers passing .and they throw a freak out fit when they see one of the boys, which I dont let happen ...a few scares and one near death experiment for Pooby ,my white silkie hen . That was an ordeal...lemme tell ya....
just kidding I'll stop at this;
Cover all sides of your coop,put a window in ,or vents at least ...install a covered ,but open run attached to the side of coop and make sure lock down is just that

they see it,they fear it...
If they feel secure,they'll roost easy and you won't have to climb trees every night
Sorry again for the novel .