1977 Walter D. Koenig 7 Melanerpes formicivorus Road 1 Nest Record Hastings Reservation 27 April 1900 Bird first seen around nest hole 3 May 1000 Hole opened; nothing. 5 May 1500 Bird in hole; hole opened; still nothing. 9 May 1230 Hole opened! 6 eggs: ① 25.7 × 20.5 ② 25.3 × 19.8 contained infertile 8mm embryo ③ 26.0 × 19.4 ④ 27.1 × 20.3 contained 6mm distorted embryo ⑤ 26.5 × 19.1 ⑥ 28.2 × 19.7 [6 eggs laid in a maximum of 4 days] 10 May 1300 Still 6 eggs. 25 May 1515 4 babies, 2 eggs. (egg ② infertile) ① Brm-Or ② 407 ③ Pink-Wht ④ DBlue-Ptaww 25 May 1515 35.1 19.7 31.9 18.7 29.0 16.3 20.8 13.5 12 June 1400 77.8 23/3/76/51 86.5 23.8/76/50 83.5 23.1/71/48 78.8 22.8/62/44