One way to help birds is plant native herb, grasses and flowers... one select group are pollinator plants that help butterflies and bees and a wide variety of insects for the insectivore birds. heres a helpful link if you have a yard, or greenspace...
https://xerces.org/pollinator-conservation/plant-lists/pollinator-plants-northeast-region/
On my way back today just before 1 pm , I spotted a migrant Cloudless Suphur flying along Center Drive, a southern species expected during warm southern flow days in late summer thru fall...
Steve Nanz's photo below
http://www.stevenanz.com/Main_Directory/Plants_Animals/Invertebrates/Insects/Lepidoptera/Butterflies/2_Other/source/cloudless_sulphur789.htm