Joseph Archuleta pleaded guilty to one count of providing false statements in the acquisition of a firearm in violation of 18 U.S.C. § 922(a)(6), and to one count of being a felon in possession of a firearm in violation of 18 U.S.C. § 922(g)(1). At sentencing, the district court departed downward eight levels from the guideline range and imposed a sentence of five months’ imprisonment, five months’ home confinement, and three years’ supervised release. The stated basis for the downward departure was that Archuleta was the sole support for two children, that he cared for his elderly, diabetic mother, and that no one else was able to care for them. On appeal, the government essentially challenges the legal sufficiency of this stated ground for departure. In the alternative, it argues that the ease should be remanded for further evidence on the availability, or lack thereof, of care for the children and mother by one or more of Archuleta’s eight brothers and sisters living in the area. Because we conclude that the family circumstances in question are within the heartland of the sentencing guidelines, we vacate the sentence and remand for resentencing.
BACKGROUND
Following Archuleta’s guilty plea, the United States Probation Office prepared a presentence report (“PSR”) which calculated a combined offense level of 19 and a criminal history category II under the United States Sentencing Commission Guidelines Manual.1 The PSR also indicated “factors that may warrant departure” from the Guidelines as follows:
Pursuant to section 5K2.0, Grounds for Departure, the sentencing Court may im*1448pose a sentence outside the range established by the applicable guidelines if the Court finds that an aggravating or mitigating circumstance exists that was not adequately taken into consideration by the Sentencing Commission in formulating the guidelines, and which would result in a sentence different from what was described in the guidelines.
There appear to be mitigating circumstances concerning this ease in that the defendant is a single parent of two minor children and also cares for his mother, age 74, who is diabetic and takes daily insulin treatments. If a downward departure was granted to an offense level within Zone C, the Court could impose a sentence of imprisonment that includes a term of supervised release with a condition that substitutes community confinement or home detention according to the schedule in 5Cl.l(e), provided that at least one-half of the minimum term is satisfied by imprisonment. This departure would allow the defendant to continue to care for his four dependents financially and still satisfy a sentence of imprisonment.
PSR ¶¶ 55, 56. Neither Archuleta nor the government objected to any part of the PSR prior to the sentencing hearing, and neither party filed a motion prior to the hearing. R. Vol. Ill at 2-3.
At sentencing, Archuleta’s counsel argued that the court should depart downward into Zone C because Archuleta is the sole provider for his family, is sorry for what he did, is a good person, and has stayed out of trouble for the most part. R. Yol. Ill at 3-9. Counsel for the government argued that his circumstances were not so exceptional as to take the case out of the heartland and to warrant a downward departure. Id. at 11-13. The district court then adopted the PSR’s calculation of offense level 19 and criminal history category II as well as its findings, noting that no evidentiary hearing was needed because there were no disputed facts.2 Id. at 14-15. The court further determined that a downward departure of eight levels was warranted because Archuleta was the sole support for two of his children,3 because he provided care for his diabetic, elderly mother, and because they had no one else to turn to. Id. at 14,17.
Counsel for the government objected to the downward departure, arguing that paragraph 32 of the PSR, which refers to Archuleta’s siblings who lived nearby, indicates that there might be others who could provide support for Archuleta’s dependents.4 Id. at 21-22. The court then asked Defendant’s counsel to confer with the Defendant and some of his siblings who were present in the courtroom to find out if any of them could care for their mother and Defendant’s two children. Id. at 25, 27-28. After a short recess, Defendant’s counsel told the court that Defendant’s mother requires 24-hour care and that none of the siblings could provide care for either her or the children.5 Id. at 28-31. The court then reaffirmed its downward departure and sentenced the Defendant to five months’ imprisonment, five months’ home confinement, and three years’ supervised release. Id. at 15-16, 18, 31-32.
*1449DISCUSSION
We review a district court’s decision to depart from the Sentencing Guidelines for abuse of discretion. Koon v. United States, — U.S. -,---, 116 S.Ct. 2035, 2047-48, 135 L.Ed.2d 392 (1996); United States v. Lowe, 106 F.3d 1498, 1501 (10th Cir.), cert. denied, — U.S.-, 117 S.Ct. 2494, 138 L.Ed.2d 1001 (1997). In Koon, the Supreme Court found “[a] district court’s decision to depart from the Guidelines ... will in most cases be due substantial deference, for it embodies the traditional exercise of discretion by a sentencing court.” Id. at -, 116 S.Ct. at 2046. The Court reasoned that district courts have an “institutional advantage” over appellate courts in making departure decisions since they deal with such determinations on a daily basis. Id. at ---, 116 S.Ct. at 2046-47.
Nevertheless, the Court also concluded that “whether a factor is a permissible basis for departure under any circumstances is a question of law, and the court of appeals need not defer to the district court’s resolution of the point.” Id. at-, 116 S.Ct. at 2047. “The abuse of discretion standard includes review to determine that the discretion was not guided by erroneous legal conclusions.” Id. at-, 116 S.Ct. at 2048. As we recently stated, in reviewing departure decisions we employ a unitary abuse of discretion standard, which includes the following inquiries:
(1) whether the factual circumstances supporting a departure are permissible departure factors; (2) whether the departure factors relied upon by the district court remove the defendant from the applicable Guideline heartland thus warranting a departure, (3) whether the record sufficiently supports the factual basis underlying the departure, and (4) whether the degree of departure is reasonable.
United States v. Collins, 122 F.3d 1297, 1303 (10th Cir.1997). We described the first inquiry as a legal question and the second as essentially a factual question. Id. In particular, we said that what constitutes a guideline’s heartland is a legal question and our review on that question is not deferential. Id. at 1303 n. 4.
It is not always an easy matter to determine where de novo review ends and deference begins.6 This is especially true where family circumstances are concerned. But, even though it is nearly impossible to draw bright lines in this area, the governing principles are clear.
Congress directed that the “Commission shall assure that the guidelines and policy statements ... reflect the general inappropriateness of considering the ... family ties and responsibilities ... of the defendant.” 28 U.S.C. § 994(e); see USSG Ch.5, Pt.H, intro, comment. Accordingly, the guidelines provide that “[f]amily ties and responsibilities ... are not ordinarily relevant in determining whether a sentence should be outside the applicable guideline range.” USSG § 5H1.6, p.s.
The Supreme Court has made it clear that when a factor is discouraged because it is not “ordinarily relevant,” or when the factor has already been taken into consideration by the guidelines, “the court should depart only if the factor is present to an exceptional degree or in some other way makes the case different from the ordinary case where the factor is present.” Koon, — U.S. at-, 116 S.Ct. at 2045; see also 18 U.S.C. § 3553(b), (e); USSG §§ 5K2.0, p.s., 5K1.1, p.s. The defendant bears the burden of proving he is entitled to a downward departure. See, e.g., United States v. Reed, 114 F.3d 1053, 1058 (10th Cir.), cert. denied, -U.S. -, 118 S.Ct. 316,-L.Ed.2d-(1997); *1450 United States v. Verners, 103 F.3d 108, 110 (10th Cir.1996); United States v. Dyce, 91 F.3d 1462, 1471 (D.C.Cir.), cert. denied, — U.S. -, 117 S.Ct. 533, 136 L.Ed.2d 418 (1996); United States v. Higgins, 967 F.2d 841, 846 (3d Cir.1992); United States v. Maldonado-Campos, 920 F.2d 714, 717 (10th Cir. 1990).
The question before us, then, is whether the record in this case establishes family circumstances so exceptional that they constitute the rare case justifying a departure from the guidelines which already recognize the reality of difficult family circumstances for many defendants and which discourage making an additional allowance on that basis.
The district court stated that “generally we don’t have a situation in which the children have one parent and one parent only and that’s the parent that’s being removed.” R. Vol. Ill at 28. This narrow view of the heartland is inconsistent with our decision in United States v. Webb, 49 F.3d 636, 638-39 (10th Cir.1995), where we reversed the district court’s downward departure, which was based, inter aha, on his status as a sole caretaker of his one son who was on his school’s honor roll before defendant’s incarceration but was having trouble thereafter. We stated that the “defendant’s role as a ‘sole caretaker’ and the child’s need ‘to be taken care of do not render the circumstances of this case extraordinary.”7 Webb, 49 F.3d at 638-39. It is also inconsistent with our recent decision in United States v. Rodriguez-Velarde, 127 F.3d 966, 967 (10th Cir.1997) (collecting cases), in which, surveying the law in other circuits, we said that “a defendant’s status as a single parent does not constitute an extraordinary family circumstance warranting departure.”
However, the district court did not solely rely on the Defendant’s care of his children as its basis for departure; it also cited Archuleta’s care of his diabetic mother and their lack of alternate sources of support as extraordinary circumstances. R. Vol. III at 14-15. The district court specifically relied on United States v. Pena, 930 F.2d 1486 (10th Cir.1991), for its decision to depart downward, stating, “the circumstances that have been brought to my attention are very comparable, if not even more severe than the situation in the Pena case.” R. Vol. Ill at 31. In Pena, we affirmed the district court’s downward departure because not only was the defendant the sole support for her two-month-old child, her 16-year-old daughter, and her daughter’s two-month-old child, but also she had only committed a single act of aberrant behavior. 930 F.2d at 1494-95. We stated that because single acts of aberrant behavior are not adequately taken into consideration by the guidelines, “[t]he aberrational character of her conduct, combined with her responsibility to support two infants, justified a departure.” Id. at 1495 (emphasis added); see also United States v. Tsosie, 14 F.3d 1438, 1441-42 & n. 3 (10th Cir.1994). In contrast, the district court in this case made no finding that Archuleta’s criminal acts constituted a single aberrant episode or were utterly inconsistent with his character.
With respect to the additional factor in this case of Archuleta’s diabetic mother, the record is scarce on the details of the care she requires.8 Nor does the record say anything about the mother’s mental and physical abilities, including her ability to prepare her own meals and, perhaps, partially care for the children. Assuming the mother cannot administer her own medication or maintain a properly balanced diet, the record is equally silent on the availability of home nurse visits and other services for the sick and elderly.
The record reflects the representation of Archuleta’s counsel that six of his eight sib*1451lings in the Española area cannot undertake their mother’s care, or that of Archuleta’s children. There is no evidence regarding the remaining two siblings, or the availability of other alternatives for care. As we said in Rodriguez-Velarde:
While we are not unsympathetic to the circumstances facing defendant’s children, defendant has not shown that these circumstances are substantially different than those facing the minor children of any single parent who is about to be incarcerated. “A sole, custodial parent is not a rarity in today’s society, and imprisoning such a parent will by definition separate the parent from the children. It is apparent that in many cases the other parent may be unable or unwilling to care for the children, and that the children will have to live with relatives, friends, or even in foster homes.”
Rodriguez-Velarde, 127 F.3d at 967 (quoting United States v. Brand, 907 F.2d 31, 33 (4th Cir.1990)).
In sum, this departure, based entirely on Archuleta’s care and support of three dependents, his two children and his diabetic mother, is not supported by our cases. In addition to Webb and Rodriguez-Velarde, referred to above, see United States v. Ziegler, 39 F.3d 1058, 1062-63 (10th Cir.1994) (downward departure based on stable marriage, support of three minor children, and other factors, reversed); and, an opinion filed contemporaneous to this one, United States v. Gallegos, 129 F.3d 1140 (10th Cir.1997) (downward departure based on, among other things, sole support of young child and partial support of parents, reversed). We also have dismissed defendants’ appeals from district courts’ refusals to depart downward based on family circumstances. See, e.g., United States v. Williamson, 53 F.3d 1500, 1529-30 (10th Cir.1995).
In general, as reflected by these decisions, our concept of family circumstances falling within the guidelines’ heartland is consistent with the overwhelming majority of the circuits.9 There are plenty of cases going the other way as well,10 although many of them involve a combination of circumstances other than family ties and re*1452sponsibilities as did Pena in our circuit.11 But the Guidelines are clear that in this most difficult and justifiably sympathy-evoking area, courts should depart downward only in rare cases. Whatever that may mean on a case-by-case basis, we conclude that this is not one of those eases. Because of this conclusion it is unnecessary for us to address the government’s alternative position regarding a remand for further evidence on the availability of family care.12
CONCLUSION
For the reasons stated above, we VACATE the sentence and REMAND for re-sentencing not inconsistent with this opinion.