Supplemental Feeding
Weather conditions that limit insect availability include temperatures below 40 degrees, steady rain, drought, or dense fog. Martins can have trouble feeding in warmer weather if it is very windy. Landlords often assume that when martins are foraging they are finding enough food for themselves and their nestlings. But when flying insects are scarce, energy spent foraging unsuccessfully can hasten starvation. Watch perched birds for drooping wings—a sign that the martin’s system is beginning to break down and digest its primary flight muscles.
Check out resources below for more information
https://www.purplemartin.org/purple-martins/troubleshooting-problems/62/supplemental-feeding/
Check out resources below for more information
https://www.purplemartin.org/purple-martins/troubleshooting-problems/62/supplemental-feeding/
Here is the YouTube Channel of one of the Members of the WPMA. They should help answer any questions you could have or provide extra information you could use.