Habitat loss the primary impact for bird decline stems from not only destruction of forest,woods, etc but also introduce d exotic plant species that destroy insect food webs. Native plants evolved with insects over millennium their symbiotic relationships. It's twofold : loss of habitat and integrity.
An example in my local park, Asian originated Sycamore and Norway maples agressively take over displacing native seedlings and shade them out , which those native oaks,cherries die. Overcomperition is the factor.currently I'm in a project that this far removed over 4000 Norway maples spawn by 4 mature trees. You get the idea. Eventually I will plant shade tolerant oaks. Etc.
From Facebook Pollinator s Friendly Yard
‼️THIS is the SUPERPOWER of KEYSTONE NATIVE PLANTS.
Cherry tree (Prunus ),oaks (Quercus)and Willow (Salix) trees host between 300-500 insect species
◾No exotic plant could ever achieve this.
◾Want butterflies? Feed the caterpillars.
◾Exotic plants will never support as many different species of caterpillars as the Keystone Natives can.
◾Find your keystone native plants here by zip code. If your zip code doesn't give you enough information try zip codes of the nearest larger town or city. LINK: https://www.nwf.org/NativePlantFinder/