Leafminers
Leafminers
A pest eating clover.
That usually depends on the person that sees the deer and where the deer is. If the deer is in a farmers field eating his/her crops, then yes the deer would be considered a pest. If the deer was in your yard, it could be considered a pest. This is possible, because if you lived in a town/city, it may cause a mess in your yard. (possibly due to eating plants, pooping in your yard, etc.) However if you lived out of town (ex. in the bush), it may not be considered a pest. Yes it would probably eat some of the leaves from the trees/bushes, but it isn't eating your crops or wrecking your small lawn. Like I said before it all depends on the person and where the deer is.
A natural way to get rid of caterpillars on Redcurrant bushes is with Neem oil. The oil will also rid the bush of other pest.
By preventing pest from eating them
If you cannot determine what particular pest is doing the damage, you can try an all-purpose rose spray on them.
For pest, you could use pestus, pernicies, or lues.
Adelaide Dunbar is a lilac bush that is beautifully fragrant and generally disease-free. But the woody plants in question (Syringa spp) all react sensitively to other than proper drainage, heat, light, moisture, nutrients, and pest control.
Herbivores, insectivores, and omnivores are enemies of leaf bugs. The insects in question can be eliminated accidentally by pest-controlling humans and plant-eating animals and deliberately by everything- and insect-eating fauna and pest-monitoring people.
Praying mantises are predators. They eat pest insects that would eat the vegetables.
Snails/slugs most likely. For that you can use rock salt from hardware store or look for a product with metaldehyde like deadline. ID the pest for certain though before you make a purchase. Snails/slugs aren't insects so the products for them not likely to work on anything else
They act as pest/vermin catchers eating mice, rats etc. which can cause problems with both animal feed and crops for human consumption.