1991 Walter D Koenig Melanerpes formicivorus Middle PHF HNHR (28 April) 715. Argh'. Hole is several inches deeper than last year; could not reach the bottom! But based on probing with a stick, I don't think there was an egg. 725. Have to leave. Moni will watch for a bit, I hope. 1330. Moni reports: ♀1533 spent more time inside; ♀1531 went to hole once but did not go in. Mark later peeped the hole to find 1 egg (normal). Hence: today, at least, ♀1533 laid, not tossed as of ~1000 or so. 1400. Opened the hole: 1 egg still there (marked #1). It is quite spherical. 1630. Still 1 egg. Set up to videotape tomorrow morning. 29 April 610. Still the #1 egg in hole! Set up the video camera and watching. 800. Well! ♀1533 laid, ♀1531 tossed; unfortunately, this all happened in an entirely different hole than the one ♀1533 laid in yesterday. Watched ♂1613 eat some of the egg at 815. 830. ♀1531 in hole - she could have laid also. Unfortunately the hole is too deep. 1000. Hole empty. I don't think ♀1531 laid; ♀1533 was in the hole afterwards and didn't toss anything. I also got mate-guarding (such as it were) on the birds; see back. 30 April 1000. Watched again this morning. This time they were going into yet another (unopened) hole, which meant that I'm not sure if anyone laid or not. ♀1533 went in ~725, later ♀1531 went in and did not toss. I left not too long afterwards and by the time I got back to open the hole it was empty.