Dawn,
*TIMELY* post!
I'm in a situation here with approx. 18-19 martins that have returned and a nasty weather outlook. We hit 54 deg. yesterday for about 3 hours, so I think the martins were able to feed for a short period. I have 1000 crickets that will be arriving today. But it looks like the next 3 days will be challenging:
42 deg. today & rain (it's currently 31 and sleeting

),
43 deg. Saturday with rain / sleet mix, and
45 deg. on Sunday & cloudy (no rain).
50 deg. on Monday,
53 deg. with rain on Tuesday and
54 deg. with rain on Wednesday
My questions are:
1. With the martins holed up in the gourds / housing, at what point should I rouse them and try to feed them the crickets? Today will be their first day that they won't be able to feed. It seems that I wouldn't want to get them out in the rain/sleet today or tomorrow, as they'll get cold & wet and since they just fed yesterday, they would possibly not even feed. Will Sunday be a better day to try feeding or is that too long to wait?
2. What is the best time of day to feed...during the afternoon when temps are at their warmest?
3. Our overnight lows on Sat. & Sun. nights will be 28 deg., but I don't want to close off any house or gourd cavities as I'm afraid of spooking the martins into leaving to go roost somewhere else. If I just put handwarmers in the Trendsetter's 12 compartments, will they possibly be drawn to the warmer cavities?