In 1959 Robert C. Clark, petitioner-appellant herein, married Judith Clark (Jelinek). *596Two children, the subjects of this action, were born of this marriage. In 1962 the Clarks were divorced in Idaho (although the record is not clear, it appears that the Clarks were married in Idaho and until the divorce were residents and domiciliaries of Idaho). Mrs. Clark was awarded custody of the children. Shortly thereafter, Mrs. Clark married one Chamberlain; this marriage was soon annulled because Chamberlain was already married at the time of his marriage to Mrs. Clark. In May 1963 Mrs. Clark married Paul Jelinek, respondent herein. A child, a half sister of the two Clark children, was born of this marriage. In November 1963 the Jelineks moved to Connecticut with the two Clark children and lived there until Mrs. Jelinek was untimely killed in an automobile accident in July 1965. Mr. Jelinek and the two young children returned to Idaho to attend the funeral of Mrs. Jelinek. On July 27, 1965, the children were taken to Portland, Oregon, by Jelinek’s aunt and uncle, where they were to await the arrival of Jelinek, at which time he and the children were to return to their home in Connecticut. On July 28, 1965, Clark obtained a writ of habeas corpus for Jelinek to show cause why the children should not be returned to Clark, their natural father. Jelinek was ■served personally in Idaho and appeared in person at the hearing. Upon the return to the writ and the hearing held thereon, the district court quashed the writ and ordered the custody of the children to remain with their stepfather, Jelinek. From that judgment Clark appeals.
At the outset we are faced with a challenge to the jurisdiction of the district court to determine the custody of the children. Respondent contends that because the children were not present in Idaho nor residents of Idaho at the time the action was commenced, the court did not have jurisdiction over the children for the purpose of determining their status. We disagree.
Mrs. Jelinek was awarded custody of the chilrden when she was divorced from Clark. Thus, when she moved to Connecticut and established residence and domicile therein, the domicile of the children followed that of their mother. Clemens v. Kinsley, 72 Idaho 251, 239 P.2d 266 (1951). However, when Mrs. Jelinek died, the domicile of the children by operation of law reverted to that of their surviving parent, Mr. Clark. Baram v. Schwartz, 151 Conn. 315, 197 A.2d 334 (1964); In re Skinner’s Guardianship, 230 Iowa 1016, 300 N.W. 1, 136 A.L.R. 907 (1941) ; In re Robben, 188 Kan. 217, 362 P.2d 29 (1961) ; Peacock v. Bradshaw, 145 Tex. 68, 194 S.W.2d 551 (1946); In re Thorne, 240 N.Y. 444, 148 N.E. 630 (1925). Since Mr. Clark’s domicile at the time of his former wife’s death was in Idaho, the domicile of the children thereafter was also Idaho despite the fact that they neither lived nor were present in *597this state. Because minors may not choose their own domicile, Restatement, Conflict of Laws § 30 (1934), Idaho became their domicile by operation of law. In such circumstances where the children and their natural father were domiciled in Idaho and the only other person seeking their custody was personally served within Idaho and appeared personally at the hearing below, the Idaho courts have jurisdiction to determine custody of the children. See May v. Anderson, 345 U.S. 528, 73 S.Ct. 840, 97 L.Ed. 1221 (1953); Stephens v. Stephens, 53 Idaho 427, 24 P.2d 52 (1933); Anno. 9 A.L.R.2d 434.
We come now to the question of who should be awarded custody of the two children. As a general rule natural parents have the absolute legal right to the custody of their minor children. I.C. § 15-1805;1 I.C. § 32-1007;2 Schiller v. Douglas, 48 Idaho 803, 285 P. 1021 (1930). However, after the parent-child relationship is established, the prima facie right of the parent to custody may be defeated by competent proof that the natural parent has forfeited or abandoned his right or that the parent is not a fit and proper person to have custody of the child. Moss v. Vest, 74 Idaho 328, 262 P.2d 116 (1953).
In this case the trial court concluded that Clark:
“ * * * abandoned, waived, surrendered, transferred, or forfeited his right to demand custody of the said children.”
Briefly, the facts upon which this conclusion is based are as follows: The divorce decree obtained by Mrs. Clark (Jelinek) required Clark to pay $90 per month for the support and maintenance of the children. From the time of the divorce in October 1962 until July 1, 1963, there is evidence that Clark paid only $50 to Mrs. Clark. Clark testified that he sent a little more to his ex-wife by money orders but could not produce any evidence to prove these payments. During this nine-month period Clark did not visit or communicate with his children.
In July 1963, upon his return to Idaho, Clark requested custody of the children for the six weeks permitted him by the divorce decree. Mrs. Clark, who by this time had married Jelinek, refused because Clark was in arrears on the support payments. They thereafter effectuated a complete settlement *598of the debt whereby Clark paid $180 to Mrs. Jelinek. He then took custody of the children for most of the next six weeks during that summer.
Shortly thereafter, in November 1963, the Jelineks moved to Connecticut with the two children. Jelinek admitted that neither he nor his wife ever communicated this fact directly to Clark and that Mrs. Jelinek did not at any time thereafter request the $90 per month support payments from Clark. From the time of the settlement with Mrs. Jelinek of the back support in July 1963 until her death in July 1965, Clark paid no further support money for the welfare of the children, although he admitted he was financially able to do so. Neither did he in any way communicate or attempt to communicate with the children. Clark claims this was because he did not know where they were. Presuming this was true,3 Clark did not inquire as to their whereabouts. Mr. Pearson, Mrs. Jelinek’s father and Clark’s former father-in-law, lived in Idaho Falls, Idaho, the’same city as Clark. Clark knew that Mr. Pearson lived nearby.
We think these facts are sufficient to sustain the trial court’s finding that Clark abandoned his children. “Abandonment may be shown by facts and circumstances as well as by direct evidence.” Finn v. Rees, 65 Idaho 181, 141 P.2d 976 (1943). It is true, as appellant contends, that this court has previously stated that nonsupport and abandonment are not necessarily -synonymous and that nonsupport, in and of itself, does ■ not constitute abandonment. Application of Altmiller, 76 Idaho 521, 285 P.2d 1064 (1955) ; Smith v. Smith, 67 Idaho 349, 180 P.2d 853 (1947). These statements, however, were made with a view toward a reasonable explanation by the delinquent parent of circumstances which would warrant an excuse for the nonsupport. In the Smith case we quoted from In re Kelly, 25 Cal.App. 651, 145 P. 156, 158 (1914):
“It is not difficult to conceive of circumstances wholly beyond the control of parents having the deepest affection for their children which would render it impossible for them to support their children or care for them in a proper way. It would, indeed, be a harsh rule which would, under such circumstances, authorize a judicial determination by which the natural right of the parents to the custody and control of their children would be forever severed.” 67 Idaho at 353, 180 P.2d at 855.
In Application of Altmiller the court said that the poverty of the parent was established by the record.
*599The trial court’s conclusion that Clark abandoned his children is further supported by statutory definitions of abandonment. I.C. § 16-1625(i) (Supp.1965) states:
“i. ‘Abandoned’ means the failure of the parent to maintain a normal parental relationship with his child, including but not limited to reasonable support or regular personal contact. Failure to maintain this relationship without just cause for a period of one (1) year shall constitute prima-facie evidence of abandonment.”
See also I.C. § 16-2005(a) (Supp.1965).
No inflexible rule can be laid down by which abandonment may be determined. Each case must be decided on its own particular facts. In the instant case, although Clark testified that he was in some financial difficulty, he stated that he earned $7,200 and $6,900 in 1963 and 1964. He .admitted that after the Jelineks moved to Connecticut, “There was enough money there at the time to pay the child support, there’s no excuse for this.” We agree with the trial court that Clark’s willful failure to provide the required support for bis two minor children and his disinterest in attempting to communicate with them for 18 months is sufficient to show that he ■abandoned his children. Such evidence also meets the test established in Moss v. Vest, supra:
“There can he no abandonment without a specific intent to sever all correlative rights and duties incident to the relationship of parent and child.” 74 Idaho at 334, 262 P.2d at 119.
The judgment is affirmed.
Costs to respondent.
TAYLOR and SPEAR, JJ., concur.. “15-1805. Parents entitled to guardianship. — Either the father or mother of a minor, being themselves respectively competent to transact their own business, and not otherwise unsuitable, must be entitled to the guardianship of the minor.”
. “32-1007. Rights of parents over children. — The father and mother of a legitimate unmarried minor child are equally entitled to its custody, services and earnings. If either the father or mother be dead or be unable or refuse to take the custody or has abandoned his or her family, the other is entitled to the child’s custody, services and earnings.”
. Mr. Pearson, Mrs. Jelinek’s father and Clark’s former father-in-law, testified that he occasionally informed Clark’s sister and mother as to the welfare of the children and their location. Clark testified that his sister and mother never related this information to him, nor did he inquire.