Coyotes are not just a rural problem plus I believe you're correct about the young ones prowling a certain time of year.I would absolutely love to chain link fence my entire yard. Sadly after being here for 23 years I can tell you 100% chain-link fencing is not a option. At some point each year, many times several times in the spring there is flash flooding and my entire back yard turns into a lake. We are fortunate and blessed that while the yard floods, and 3 times the horse stalls the house itself has never flooded. My next door neighbor has a chain link fence and I will use her as a example. The floods wreck her fence and she has to redo it about every 2 years. A few years ago she had to redo the back section twice as flooding just ripped it out. I'm looking at options right now. I'm exploring moveable electric fencing as a option. I also would ideally like to turn Russ's empty stall into another closed off coop. Dad is halfway on board but he also has a plan for that stall. He wants to turn it into a hay shed and fill it up with hay. Right now is the prime time to do it and if he does Dirt would be solid until up into April. Seeing as how hard it can be to find good hay December through April that is a hard one to argue with. Last year and this spring was horrible to find hay. Mom panics when we get below 5 bales. This march we were down to 1 before he could find some and then it was not the best but what we had to use until the first cutting came in. Dad also made a good point to me. As far as predators go, if I am dealing with a coyote, my troubles always seem to fall in July through September. Normally when the young males are kicked out of the packs. I've never had a coyote issue the rest of the year. Right now, with everyone locked up maybe said nasty critter will move on. This has just been a hard year, one of the hardest for me. The supervised turnout, even for just a hour has helped the girls who until now have never been locked up 24/7.
We are in a city suburb neighborhood where there's only about 10 ft sideyard distance between homes & we are on a cul-de-sac end. We tore out the old approximately 60-yr-old chainlink fencing (useless fence IMO for so-o-o many reasons) & put up a block wall/iron fence all around our property w/ over 8 ft high backyard wall. & still we got a female Coyote in the back yard in the early morning around 5:30 a.m.
The birds were still locked up in the coop TG! But the rascal Coyote got into the yard by hopping from a neighbor's roof into our yard. It was shocked seeing my DH at the back door & w/ 2 tries was able to jump out of our yard over the 8 ft block wall! DH called animal control who captured it in the neighborhood. They said they captured another male earlier that week in our 'hood!
We're only a couple miles from the San Gabriel Mtn range & Angeles Nat'l Forest so our 'burbs get all kinds of wild animals & birds showing up ~ especially during fire season when animals are fleeing the smoke!
Our backyard block wall w/added redwood privacy fencing added on top ~ 2016. It's very tall but the female Coyote used the neighbor's roof to jump in!
W/ all the thorny trees we've planted (Pomegranates, Lemon, & Grapefruit trees) in the back yard it's difficult even for stray cats to get in over the wall... but the cats still manage & we don't mind them so much... especially if they catch a rat in their clutches

Hard to see but there are a couple Silkies near bottom of this pic!