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Maggot attacks

It seems this year a lot of animals and people are getting maggots in fresh wounds, even small ones. My poor chicken (called Onyx) gets his rear feathers shaved for cleanliness (he is 9 and can't prean back there so well any more) and to my horror this year it let some nasty fly get under his feathers and bite him up (prolly horse or dear fly judging by the pattern of bites). The worst part is, other flys came in and laid eggs all over him and I discoverd a very unhappy little boy covered in maggots about a month ago. I cleaned them off and he was doing okay aside from being chewed to bits in each area he had been bitten (a big spot that I think started as 3 small ones few inches below his vent and then a little row of small pockets running up the left side and over his tail bone. Poor guy. I caught it when most of the maggots were just barely skinny grains of rice size and after a week put him out only to have him attacked right through the scabs a second time 3 days later. This time I got them a little faster because I was checking every day and they were like 3/4 rice size, but they still chewed him up something awful in the bad area (the small ones healed thankfully). Anyhow, he has had 3 more weeks inside and counting until I know he is totally healed. From what I have been reading and hearing it's happening a lot this year.

The second outbreak I caught some adults on him as well. I don't recognise the species (and there likely is more than one responsible) as one I usually see on the farm and although it is clear it is a kind that distroys tissue rather than just eating already dead areas I know nothing about it. The maggots are very non-descript generic maggots and I think they hit plump grain of rice size in 48 hours when it's hot and humid out. The adults I saw were something between a black and house fly in size and form but had light stripes running front to back on the thorax and abdomin and bright red eyes.

I'd love to know a little more about fly species who fit this behavior and growth pattern/form if anyone has any extra information. Onyx is doing well btw and wakes me up each morning at 7:45 or so :) I'm hoping to put him out in another week or two.

p.s. thanks for any interesting tidbits of information and thoughts.

p.p.s. I live in western Michigan (Lowell) if that helps any in IDing the type of fly it might be. (flys are real bad, I'm getting them in my veggitables and flowers this year too)

Members of Sarcophagidae (fle
Members of Sarcophagidae (flesh flies) are typically noted for their bright red eyes although they are described as having 4 solid lines traveling the length of the thorax on a lighter-colored background. I don't remember if their maggots can feed on live flesh, but it is certainly something to look up. These deposit live maggots instead of the typical process of laying an egg on the host and waiting for the maggot to emerge.

Poor Rooster!
I'm lucky, I guess--I've never had to deal with maggots on any pets or livestock yet, but it sounds grisly! If the maggots are small, I gather that the main problem flies are usually blow or fleshflies. I don't know much about them myself, but maybe one of the site's 'fly-guys' will recognize the exact cuplrits from your description and can offer more...

from the Wiki page on myiasis (fly-strike):

'Flies responsible for myiasis

There are three main fly families causing economically important myiasis in livestock and also, occasionally, in humans:

Oestroidea (botflies)
Calliphoridae (blowflies)
Sarcophagidae (fleshflies)

Other families occasionally involved are:


I've seen this on a dog as well. Strangely the maggots were living entirely on the dog's hair with no bites or damage to the skin. This dog spent a lot of time wading in the river and had very thick long hair on the back of the hind legs.

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