190 
FRANCIS H. HERRICK 
TABLE 1 
Analysis of reproductive cycle 
1. Migration to breeding range, or 
place of birth. 
2. Courtship, and mating; often at- 
tended by song and peculiar antics, 
especially in the male. 
(a) Selection of nest-site, or 
resort to old, by one or 
both, and often attend- 
ed by guarding and 
fighting instincts. 
(b) Building of neio nest, 
or adaptation of old, 
by one or both birds, 
and often with in- 
stincts of guarding, 
pugnacity, and con- 
cealment. 
3. Nest- 
build- <; 
ing. 
Egg-laying; usually at daily inter- 
vals, in completed nest, and as 
before often with guarding, fight- 
ing and concealment. 
Incubation or brooding instinct; 
beginning at a certain time, and 
with its gradual rise often complete- 
ly allaying fear; as before attended 
by instincts of concealment guard- 
ing and pugnacity. The attendant 
care of eggs embraces a variety of 
instinctive acts, sometimes recur- 
rent, as removal of eggs in bill, 
inspection of eggs, stirring of eggs 
with bill or feet, cleaning nest by 
removal of broken eggs or shells, 
shielding eggs from heat, and some- 
times hiding them with covering 
of leaves. 
